-
DIMENSIONS
21 cm x 48 cm x 23 cm
8,3" x 18,9" x 9,1" (H x W x D) -
VOLUME
33 L
8,7 gal -
WEIGHT
1,2 kg
2,6 lbs -
LAPTOP POCKET
16"
Lisbon Duffle Backpack Small – Smart, Convertible & Ready for Any Journey
Meet the Lisbon Duffle Backpack Small by Kapten & Son — a compact yet powerful hybrid that redefines everyday mobility. Designed for modern explorers, this 33L convertible travel backpack transforms effortlessly from duffle bag to backpack in seconds. Made from recycled, vegan tech materials and treated with a water-repellent finish, it’s engineered for 12- to 48-hour adventures, whether you’re commuting, flying, or escaping for the weekend.
Who is it for?
For design lovers, digital nomads, and active travelers who value flexibility, function, and clean aesthetics. The Lisbon Duffle Backpack Small adapts to every scenario — from gym sessions and creative commutes to spontaneous overnighters and minimalist getaways. Wherever you go, it keeps up with your rhythm.


Why It Stands Out
- ✔️ 2-in-1 Convertible Design: Switch easily between backpack and duffle bag mode with hidden straps and side handles
- ✔️ Smart 33L Volume: Ideal for daily use, gym sessions, or 1–2 day trips — compact yet surprisingly spacious
- ✔️ Built-In Wet Pocket: Separate damp clothes, shoes, or gear in a dedicated waterproof compartment
- ✔️ Tech-Ready: Padded 16" laptop sleeve and micro-fleece tablet compartment keep devices safe and scratch-free
- ✔️ Comfort & Security: Padded back, reflective details, and anti-theft back pocket ensure smooth, worry-free travel
Why You’ll Love It
- Moves seamlessly between work, gym, and weekend mode
- Eco-friendly build from 100% recycled PET — durable, vegan, and water-repellent
- Carry-on compatible for stress-free flights and cabin travel
- Ergonomic fit for active mobility and long wear comfort
- Includes a removable wet pouch for liquids or post-workout gear
The Lisbon Duffle Backpack Small is more than a bag — it’s your lightweight, go-anywhere system. Tough enough for daily use, sleek enough for business travel, and practical enough for impromptu escapes, it delivers effortless adaptability. From airport gates to mountain roads, it follows your every move with timeless style and comfort.
True to Kapten & Son’s philosophy, it combines minimalist German design with functional sustainability — built to last and crafted for explorers who seek both beauty and performance.
Need more space? Check out the Lisbon Pro Backpack — an expandable 30L version built for extended trips. Prefer the same hybrid format with extra room? The Lisbon Duffle Backpack M offers a larger 40L capacity with the same sleek convertible design. And if you’re after something smaller for daily rides, the Bali Medium Backpack brings the same clean aesthetic in an 18L everyday format.
Ready for a smarter way to move? Pack your essentials, switch modes, and go.

Technical Specs – Lisbon Duffle Backpack Small
Brand: Kapten & Son
Product type: Convertible backpack / duffle bag
Best for: Daily use, gym, weekend travel (12–48h)
Capacity: 33 L
Dimensions: 21 x 48 x 23 cm (H x W x D)
Weight: 1.2 kg
Material: Recycled PET with vegan tech coating
Lining: 100% recycled PET (grey interior)
Water-repellent: Yes
Laptop compartment: Padded 16" (33 x 27 cm), fleece-lined
Tablet compartment: Micro-fleece padded
Pockets: Top + front openings, side strap pockets, anti-theft back pocket, integrated wet pocket with detachable liquid bag, 2 inner mesh zip pockets, bottle holder
Comfort: Ergonomic padded back + straps, reflective details
Travel features: Suitcase sleeve, carry-on size, removable wet pouch
Closure system: Zipper
Origin: Designed in Cologne, Germany — responsibly made in Asia.
FAQ
Can I use it as both a backpack and a duffle bag?
Absolutely. The Lisbon Duffle Backpack Small converts instantly thanks to hidden shoulder straps and side handles, giving you full freedom of carry.
Is it suitable as a carry-on?
Yes — its compact 33L profile meets most airline cabin requirements and fits easily under the seat or in overhead compartments.
Does it have a laptop sleeve?
Yes, a padded 16-inch laptop compartment and micro-fleece tablet pocket provide safe storage for your devices during travel or daily use.
Can I store wet clothes or gym gear?
Definitely — the integrated wet pocket keeps damp items separate and odor-free, while the removable liquid bag makes cleaning effortless.
Is it waterproof?
It’s water-repellent — made with coated recycled PET to handle light rain and splashes, though it’s not fully submersible.