What makes this backpack the most waterproof everyday backpack?

D-FY.IT uses a patent-pending double-roll system : the internal liner rolls and seals independently from the outer shell, forming an airtight, watertight barrier . The liner acts like a dry bag — but with real internal organization — and is built with a 10,000mm waterproof coating plus a combination of seam welding and seam sealing for maximum waterproofing. The outer shell also has a waterproof coating to keep the elements outside. Result: your gear stays dry, even in extreme conditions.

What materials are used in the backpack?

Outer : D-Shell (840D ballistic nylon with external matter polycarbonate coating) Liner : Custom-developed 70D nylon with 10,000mm waterproof PU coating — silky smooth and premium-feeling for easy packing Hardware : Woojin More information about meterials used

Does the backpack have any structure when it’s empty?

Yes. It’s a soft-shell design, but D-Shell has structure. It holds shape well even when empty — no floppy sack feel

Can I use it in freezing or extreme cold conditions?

Yes. All components — including the fabric, zippers, and buckles — were tested to perform well in sub-zero temperatures. It won’t stiffen or crack in the cold.

Can the D-FY.IT 1 backpack withstand years of heavy use?

Yes. Every material and component was selected for durability — abrasion-resistant shell, waterproof coatings, top-tier zippers, and reinforced stitching. It’s made to take a beating and keep going.

What size is the backpack?

The D-FY.IT 1 holds 20L in its standard form , and expands up to 27L thanks to multiple closure styles. It’s compact enough for daily use, but gives you extra space when needed — perfect for commuting, short trips, or gear-heavy days. It fits a 15" laptop, everyday carry, and more — without the bulk of a travel pack.

Does it fit people with smaller or larger torsos?

Yes. The shoulder straps are designed to fit a wide range of body types, from petite to tall frames. It's not a hiking pack with load lifters—but for everyday carry, it adjusts well.

Is it carry-on approved?

Yes. It meets carry-on size requirements for most airlines and fits easily under a seat or in overhead bins.

What size water bottle fits in the side pocket?

The external side pocket fits bottles up to 3.25 inches (8.25 cm) in diameter and is 7 inches (18 cm) deep. That’s perfect for up to 1L Nalgene bottles or 20oz Hydro Flasks, and similar sizes. It holds them securely — even on the move.

Do the shoulder straps have strap keepers?

Yes. The D-FY.IT 1 comes with shoulder strap fasteners to keep loose webbing neatly secured — no dangling ends, no flapping around. Clean, quiet, and comfortable.

Is the backpack comfortable to wear for long periods?

Yes. The shoulder straps and back panel are padded with EVA foam — durable, supportive, and water-resistant, so it won’t soak up sweat or rain. It stays comfortable, even fully loaded.

Does the back panel have ventilation?

Yes. The back padding is designed with strategically placed perforations to allow for airflow and reduce heat buildup. It helps keep you cooler during long commutes or warm weather use.

What size is the backpack?

The D-FY.IT 1 holds 20L in its standard form , and expands up to 27L thanks to multiple closure styles. It’s compact enough for daily use, but gives you extra space when needed — perfect for commuting, short trips, or gear-heavy days. It fits a 15" laptop, everyday carry, and more — without the bulk of a travel pack.

Does it fit people with smaller or larger torsos?

Yes. The shoulder straps are designed to fit a wide range of body types, from petite to tall frames. It's not a hiking pack with load lifters—but for everyday carry, it adjusts well.

Is it carry-on approved?

Yes. It meets carry-on size requirements for most airlines and fits easily under a seat or in overhead bins.

Is the backpack comfortable to wear for long periods?

Yes. The shoulder straps and back panel are padded with EVA foam — durable, supportive, and water-resistant, so it won’t soak up sweat or rain. It stays comfortable, even fully loaded.

Does the back panel have ventilation?

Yes. The back padding is designed with strategically placed perforations to allow for airflow and reduce heat buildup. It helps keep you cooler during long commutes or warm weather use.

Does it have a laptop compartment?

Yes. There's a fully padded, suspended laptop compartment that fits up to 15" devices and keeps them protected from drops and moisture.

Does it have internal organization?

Yes. Inside the waterproof liner, you’ll find one zippered pocket and two pockets with gravity-defying flaps — they stay closed even when the bag is upside down. They’re perfect for keeping your smaller items secure and easy to reach.

Can I carry tall or awkwardly shaped items inside?

Yes. The bag includes two pairs of removable internal side straps that let you secure taller items like water bottles, tripods, or folded umbrellas—without them tipping over or shifting around.

Is it easy to see what's inside the bag?

Yes. The bag is lined with a high-contrast interior that makes it easy to spot your gear, even in low light. No more digging around in a dark black hole to find your keys.

Is it safe to carry expensive electronics inside?

Absolutely. It’s built for that. The laptop compartment is padded, suspended, and waterproof. The entire bag is sealed to keep water and dirt out—even in driving rain.

What if D-FY.IT 1 is submerged?

It’s not a dry bag or dive bag — but it’s close. The materials are fully waterproof, and the seams are sealed. If it’s briefly submerged, your gear stays dry. Prolonged submersion isn’t recommended, but it holds up better than almost any “waterproof” everyday pack.

Will the design fit in both casual and professional settings?

Yes. The D-FY.IT 1 has a clean, minimalist design that blends seamlessly into any environment—whether you're commuting, traveling, in the office, or on the trail. It’s subtle, functional, and never out of place.

Does minimalist design mean fewer features?

Not at all. We believe in intentional minimalism — every detail is there for a reason. From comfort to waterproofing to internal organization, this bag is packed with features, without the clutter or gimmicks.

Can I use this backpack for commuting, hiking, or travel?

Absolutely. It’s built for versatility: minimalist enough for work, rugged enough for the outdoors, and compact enough for travel. One bag for all situations.

Does it have a secure pocket for valuables?

Yes. There's a hidden pocket with a key lanyard loop , designed specifically for city use — quick to access, but hard to spot. It’s large enough to fit the biggest iPhone, a wallet, and keys, keeping your essentials safe and close at hand.

Are there quick-access points for small items?

Yes. The shoulder straps feature built-in loops designed to hold sunglasses, wireless earbuds cases, or other small gear you want within easy reach. Functional without adding bulk.

Is the backpack rigid or soft? Can I squeeze it into tight spaces?

It’s soft and semi-structured. You can compress it into overhead bins, under seats, or tight lockers. No hard frames inside.

How do I clean the backpack if it gets dirty?

Wipe it with a damp cloth. For stubborn stains, use mild soap and water. Avoid machine washing or harsh chemicals—they could damage the waterproof coating.

Will the design fit in both casual and professional settings?

Yes. The D-FY.IT 1 has a clean, minimalist design that blends seamlessly into any environment—whether you're commuting, traveling, in the office, or on the trail. It’s subtle, functional, and never out of place.

Does minimalist design mean fewer features?

Not at all. We believe in intentional minimalism — every detail is there for a reason. From comfort to waterproofing to internal organization, this bag is packed with features, without the clutter or gimmicks.

Can I use this backpack for commuting, hiking, or travel?

Absolutely. It’s built for versatility: minimalist enough for work, rugged enough for the outdoors, and compact enough for travel. One bag for all situations.

Is the backpack rigid or soft? Can I squeeze it into tight spaces?

It’s soft and semi-structured. You can compress it into overhead bins, under seats, or tight lockers. No hard frames inside.

How do I clean the backpack if it gets dirty?

Wipe it with a damp cloth. For stubborn stains, use mild soap and water. Avoid machine washing or harsh chemicals—they could damage the waterproof coating.

When will I receive my backpack?

We plan to start shipping shortly after the campaign ends. Estimated delivery is December 2025. We’ll keep you updated every step of the way.

Do you ship internationally?

Yes, we ship worldwide. For backers in the USA and EU, all duties and taxes are included in the final price—no surprise fees. For other regions, local duties and taxes may apply and will need to be paid by the recipient upon delivery.

What’s your return and warranty policy?

We offer a 30-day satisfaction guarantee and a 3-year warranty against manufacturing defects. If anything breaks due to workmanship or materials—we’ll repair or replace it. See full policy here

How do you handle my personal data?

We take privacy seriously. Your data is handled securely and never sold or shared. For full details, see our Privacy Policy .

What are your values around ethics and sustainability?

We aim to minimize environmental impact and operate fairly. That means making durable products, keeping logistics efficient, and working with reputable suppliers under fair labor practices. Learn more on our Ethics & Sustainability page.

Who’s behind D-FY.IT?

We’re a small, independent Swiss team of outdoor enthusiasts, who built this backpack out of personal frustration with “water-resistant” products that fail when it counts. Designed in Switzerland. Made to defy the elements. More about us

How can I stay updated on the campaign?

Sign up on this page , and we’ll send you exclusive updates, behind-the-scenes info, and your early bird launch access.

What’s your return and warranty policy?

We offer a 30-day satisfaction guarantee and a 3-year warranty against manufacturing defects. If anything breaks due to workmanship or materials—we’ll repair or replace it. See full policy here

How do you handle my personal data?

We take privacy seriously. Your data is handled securely and never sold or shared. For full details, see our Privacy Policy .

What are your values around ethics and sustainability?

We aim to minimize environmental impact and operate fairly. That means making durable products, keeping logistics efficient, and working with reputable suppliers under fair labor practices. Learn more on our Ethics & Sustainability page.

Who’s behind D-FY.IT?

We’re a small, independent team of outdoor enthusiasts, who built this backpack out of personal frustration with “water-resistant” products that fail when it counts. Designed in Switzerland. Made to defy the elements. More about us

How can I stay updated on the campaign?

Sign up on this page , and we’ll send you exclusive updates, behind-the-scenes info, and your early bird launch access.

FAQ

Build & Materials

What makes this backpack the most waterproof everyday backpack?
D-FY.IT uses a patent-pending double-roll system: the internal liner rolls and seals independently from the outer shell, forming an airtight, watertight barrier. The liner acts like a dry bag — but with real internal organization — and is built with a 10,000mm waterproof coating plus a combination of seam welding and seam sealing for maximum waterproofing. The outer shell also has a waterproof coating to keep the elements outside. Result: your gear stays dry, even in extreme conditions.
What materials are used in the backpack?
Outer: D-Shell (840D ballistic nylon with external matter polycarbonate coating)
Liner: Custom-developed 70D nylon with 10,000mm waterproof PU coating — silky smooth and premium-feeling for easy packing
Hardware: Woojin

More information about meterials used
Does the backpack have any structure when it’s empty?
Yes. It’s a soft-shell design, but D-Shell has structure. It holds shape well even when empty — no floppy sack feel
Can I use it in freezing or extreme cold conditions?
Yes. All components — including the fabric, zippers, and buckles — were tested to perform well in sub-zero temperatures. It won’t stiffen or crack in the cold.
Can the D-FY.IT 1 backpack withstand years of heavy use?
Yes. Every material and component was selected for durability — abrasion-resistant shell, waterproof coatings, top-tier zippers, and reinforced stitching. It’s made to take a beating and keep going.

Fit & Comfort

What size is the backpack?
The D-FY.IT 1 holds 20L in its standard form, and expands up to 27L thanks to multiple closure styles. It’s compact enough for daily use, but gives you extra space when needed — perfect for commuting, short trips, or gear-heavy days. It fits a 15" laptop, everyday carry, and more — without the bulk of a travel pack.
Does it fit people with smaller or larger torsos?
Yes. The shoulder straps are designed to fit a wide range of body types, from petite to tall frames. It's not a hiking pack with load lifters—but for everyday carry, it adjusts well.
Is it carry-on approved?
Yes. It meets carry-on size requirements for most airlines and fits easily under a seat or in overhead bins.
What size water bottle fits in the side pocket?
The external side pocket fits bottles up to 3.25 inches (8.25 cm) in diameter and is 7 inches (18 cm) deep. That’s perfect for up to 1L Nalgene bottles or 20oz Hydro Flasks, and similar sizes. It holds them securely — even on the move.
Do the shoulder straps have strap keepers?
Yes. The D-FY.IT 1 comes with shoulder strap fasteners to keep loose webbing neatly secured — no dangling ends, no flapping around. Clean, quiet, and comfortable.
Is the backpack comfortable to wear for long periods?
Yes. The shoulder straps and back panel are padded with EVA foam — durable, supportive, and water-resistant, so it won’t soak up sweat or rain. It stays comfortable, even fully loaded.
Does the back panel have ventilation?
Yes. The back padding is designed with strategically placed perforations to allow for airflow and reduce heat buildup. It helps keep you cooler during long commutes or warm weather use.

Fit & Comfort

What size is the backpack?
The D-FY.IT 1 holds 20L in its standard form, and expands up to 27L thanks to multiple closure styles. It’s compact enough for daily use, but gives you extra space when needed — perfect for commuting, short trips, or gear-heavy days. It fits a 15" laptop, everyday carry, and more — without the bulk of a travel pack.
Does it fit people with smaller or larger torsos?
Yes. The shoulder straps are designed to fit a wide range of body types, from petite to tall frames. It's not a hiking pack with load lifters—but for everyday carry, it adjusts well.
Is it carry-on approved?
Yes. It meets carry-on size requirements for most airlines and fits easily under a seat or in overhead bins.
Is the backpack comfortable to wear for long periods?
Yes. The shoulder straps and back panel are padded with EVA foam — durable, supportive, and water-resistant, so it won’t soak up sweat or rain. It stays comfortable, even fully loaded.
Does the back panel have ventilation?
Yes. The back padding is designed with strategically placed perforations to allow for airflow and reduce heat buildup. It helps keep you cooler during long commutes or warm weather use.

Tech & Protection

Does it have a laptop compartment?
Yes. There's a fully padded, suspended laptop compartment that fits up to 15" devices and keeps them protected from drops and moisture.
Does it have internal organization?
Yes. Inside the waterproof liner, you’ll find one zippered pocket and two pockets with gravity-defying flaps — they stay closed even when the bag is upside down. They’re perfect for keeping your smaller items secure and easy to reach.
Can I carry tall or awkwardly shaped items inside?
Yes. The bag includes two pairs of removable internal side straps that let you secure taller items like water bottles, tripods, or folded umbrellas—without them tipping over or shifting around.
Is it easy to see what's inside the bag?
Yes. The bag is lined with a high-contrast interior that makes it easy to spot your gear, even in low light. No more digging around in a dark black hole to find your keys.
Is it safe to carry expensive electronics inside?
Absolutely. It’s built for that. The laptop compartment is padded, suspended, and waterproof. The entire bag is sealed to keep water and dirt out—even in driving rain.
What if D-FY.IT 1 is submerged?
It’s not a dry bag or dive bag — but it’s close. The materials are fully waterproof, and the seams are sealed. If it’s briefly submerged, your gear stays dry. Prolonged submersion isn’t recommended, but it holds up better than almost any “waterproof” everyday pack.

Use & Versatility

Will the design fit in both casual and professional settings?
Yes. The D-FY.IT 1 has a clean, minimalist design that blends seamlessly into any environment—whether you're commuting, traveling, in the office, or on the trail. It’s subtle, functional, and never out of place.
Does minimalist design mean fewer features?
Not at all. We believe in intentional minimalism — every detail is there for a reason. From comfort to waterproofing to internal organization, this bag is packed with features, without the clutter or gimmicks.
Can I use this backpack for commuting, hiking, or travel?
Absolutely. It’s built for versatility: minimalist enough for work, rugged enough for the outdoors, and compact enough for travel. One bag for all situations.
Does it have a secure pocket for valuables?
Yes. There's a hidden pocket with a key lanyard loop, designed specifically for city use — quick to access, but hard to spot. It’s large enough to fit the biggest iPhone, a wallet, and keys, keeping your essentials safe and close at hand.
Are there quick-access points for small items?
Yes. The shoulder straps feature built-in loops designed to hold sunglasses, wireless earbuds cases, or other small gear you want within easy reach. Functional without adding bulk.
Is the backpack rigid or soft? Can I squeeze it into tight spaces?
It’s soft and semi-structured. You can compress it into overhead bins, under seats, or tight lockers. No hard frames inside.
How do I clean the backpack if it gets dirty?
Wipe it with a damp cloth. For stubborn stains, use mild soap and water. Avoid machine washing or harsh chemicals—they could damage the waterproof coating.

Use & Versatility

Will the design fit in both casual and professional settings?
Yes. The D-FY.IT 1 has a clean, minimalist design that blends seamlessly into any environment—whether you're commuting, traveling, in the office, or on the trail. It’s subtle, functional, and never out of place.
Does minimalist design mean fewer features?
Not at all. We believe in intentional minimalism — every detail is there for a reason. From comfort to waterproofing to internal organization, this bag is packed with features, without the clutter or gimmicks.
Can I use this backpack for commuting, hiking, or travel?
Absolutely. It’s built for versatility: minimalist enough for work, rugged enough for the outdoors, and compact enough for travel. One bag for all situations.
Is the backpack rigid or soft? Can I squeeze it into tight spaces?
It’s soft and semi-structured. You can compress it into overhead bins, under seats, or tight lockers. No hard frames inside.
How do I clean the backpack if it gets dirty?
Wipe it with a damp cloth. For stubborn stains, use mild soap and water. Avoid machine washing or harsh chemicals—they could damage the waterproof coating.

Shipping & Logistics

When will I receive my backpack?
We plan to start shipping shortly after the campaign ends. Estimated delivery is December 2025. We’ll keep you updated every step of the way.
Do you ship internationally?
Yes, we ship worldwide. For backers in the USA and EU, all duties and taxes are included in the final price—no surprise fees. For other regions, local duties and taxes may apply and will need to be paid by the recipient upon delivery.

Warranty & Trust

What’s your return and warranty policy?
We offer a 30-day satisfaction guarantee and a 3-year warranty against manufacturing defects. If anything breaks due to workmanship or materials—we’ll repair or replace it.

See full policy here
How do you handle my personal data?
We take privacy seriously. Your data is handled securely and never sold or shared. For full details, see our Privacy Policy.
What are your values around ethics and sustainability?
We aim to minimize environmental impact and operate fairly. That means making durable products, keeping logistics efficient, and working with reputable suppliers under fair labor practices. Learn more on our Ethics & Sustainability page.
Who’s behind D-FY.IT?
We’re a small, independent Swiss team of outdoor enthusiasts, who built this backpack out of personal frustration with “water-resistant” products that fail when it counts. Designed in Switzerland. Made to defy the elements.

More about us
How can I stay updated on the campaign?
Sign up on this page, and we’ll send you exclusive updates, behind-the-scenes info, and your early bird launch access.

Warranty & Trust

What’s your return and warranty policy?
We offer a 30-day satisfaction guarantee and a 3-year warranty against manufacturing defects. If anything breaks due to workmanship or materials—we’ll repair or replace it.

See full policy here
How do you handle my personal data?
We take privacy seriously. Your data is handled securely and never sold or shared. For full details, see our Privacy Policy.
What are your values around ethics and sustainability?
We aim to minimize environmental impact and operate fairly. That means making durable products, keeping logistics efficient, and working with reputable suppliers under fair labor practices. Learn more on our Ethics & Sustainability page.
Who’s behind D-FY.IT?
We’re a small, independent team of outdoor enthusiasts, who built this backpack out of personal frustration with “water-resistant” products that fail when it counts. Designed in Switzerland. Made to defy the elements.

More about us
How can I stay updated on the campaign?
Sign up on this page, and we’ll send you exclusive updates, behind-the-scenes info, and your early bird launch access.