SKU: 95175279641

Lisbon Small Backpack

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Description

Lisbon Small BackpackLisbon Small Backpack The Clean, Cabin Ready Daypack for Effortless City & Travel Days Introducing the Lisbon Small by Kapten & Son a refined, compact urban rolltop backpack for light packers with bold agendas. Its the kind of backpack you grab without thinking because it already fits your day. Made from vegan, water repellent materials and loaded with smart storage, this expandable 1823L daypack keeps your essentials dry, secure, and stylish. Whether

Lisbon Small Backpack – The Clean, Cabin-Ready Daypack for Effortless City & Travel Days

Introducing the Lisbon Small by Kapten & Son — a refined, compact urban rolltop backpack for light packers with bold agendas. It’s the kind of backpack you grab without thinking — because it already fits your day. Made from vegan, water-repellent materials and loaded with smart storage, this expandable 18–23L daypack keeps your essentials dry, secure, and stylish. Whether you're commuting, escaping for the weekend, or dashing through airport terminals, this is your go-to gear for sleek versatility.

Who’s it for?

City dwellers, design lovers, and minimalist travelers. If you want a carry-on-sized backpack that looks sharp, fits under the seat, and doesn’t scream “tourist” — the Lisbon Small has your rhythm.

Why the Lisbon Small Shines

  • 📦 Flexible 18–23L Capacity – Rolltop lets you adjust on the fly (from “daily essentials” to “just one more thing”).
  • 💻 Laptop-Safe Storage – Fleece-lined 14” sleeve, safely stashed in the back panel.
  • 🌱 Eco & Water-Repellent – 100% vegan build, made from recycled PET.
  • ✈️ Perfect for Travel – Suitcase sleeve, anti-theft pocket, and removable liquid pouch included.
  • 🗂️ Smart Interior Layout – Mesh pockets, zip compartments, bottle holder & wet bag.

Not oversized. Not overbuilt. Just the right amount of smart.

Why You’ll Love It

The Lisbon Small stays clean and compact — even when you’re packing like you’ve got five “quick stops” before dinner. It keeps your tech protected, your essentials easy to find, and your look effortlessly sharp.

  • Understated design, loaded with practical features
  • Stays compact — even when fully loaded
  • Keeps tech safe and gear sorted
  • Sustainable, splash-proof, and built for movement
  • Airline-friendly and suitcase-compatible

It’s the backpack that stays out of your way — and quietly makes your day smoother.

Need a bit more space? Go for the Lisbon Pro — same sleek look, extra room. Prefer a sporty twist? Try the Fyn for a rugged city-to-trail crossover. Or browse our full Kapten & Son backpack collection to explore all styles.

Technical Details – Lisbon Small by Kapten & Son

Brand: Kapten & Son
SKU: 4251145258511
Size: 40–52.5 cm (H) x 30 cm (W) x 17 cm (D)
Capacity: 18–23L (rolltop expandable)
Weight: 1.1 kg
Main Material: Recycled PET (vegan tech fabric)
Lining: Recycled PET
Laptop Compartment: 31 x 27 cm (fits 14” MacBook)
Water Resistance: Yes (splash-proof outer)
Vegan: 100%
Anti-Theft Features: Discreet back pocket
Travel-Ready: Luggage sleeve, removable liquid pouch, wet bag
Comfort: Padded back + straps, reflective trim
Organization: Internal mesh, zipped & fleece pockets, bottle holder

FAQ

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Yes. Its slim silhouette and adjustable rolltop make it a strong cabin-friendly choice. It typically fits under the seat or in the overhead compartment, and it also slides onto your suitcase handle thanks to the luggage sleeve. Always compare our dimensions (40–52.5 x 30 x 17 cm) with your airline’s rules to be 100% sure.

+

Absolutely. The back panel includes a padded, fleece-lined sleeve sized 31 x 27 cm, designed for laptops up to 14” (including a 14” MacBook). It keeps your device protected and close to your back for better comfort.

+

Yes — the outer fabric is water-repellent and ideal for everyday drizzle, splashes, and wet commutes. For heavy downpours or long exposure, treat it as “splash-proof” rather than fully waterproof and consider adding extra protection if needed.

+

Totally. You get multiple internal pockets and compartments, including mesh organization, zipped sections, a dedicated bottle holder, plus travel helpers like a wet bag and a removable liquid pouch — so small items don’t vanish to the bottom.

+

The Lisbon Small is crafted from recycled PET and built with 100% vegan materials. It’s a practical way to reduce impact without giving up durability, clean design, or everyday performance.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 95175279641

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Marilyn solano
Omaha, US
★★★★★ 5
Interesting
Format: Paperback
Product with very good quality, its description matches the website.
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Reviewed in the United States on April 11, 2026
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Daniel Rosehill
Charlottesville, US
★★★★★ 5
A wonderful primer for those discovering the amazing world of generative AI
Format: Paperback, Format: Paperback
Somewhere in the past year, ChatGPT has gone from "cool, interesting, amusing" to a massively valuable work assistant capable of writing Python scripts, analysing data, and doing lots, lots, more. The key to this? The rapid evolution of OpenAI's GPT models and making my first forays into prompt engineering. If I thought I was getting good, though, this book took me reminded me that I'm just scratching the surface. Halfway through the first chapter I was already furiously scribbling notes in the margins for what I could do better with my prompt writing and by the end of the text I felt like I had gotten a very good grounding - not just in GPTs specifically but in the bigger picture of how these hugely powerful tools were trained and came to maturity. I imagine that few will argue with my assertion that there is lots of hyperbole and "noise" in the AI space right now which, as ever, makes it hard to pick out the signal from the noise. Which is precisely why I sought out an O'Reilly title and I'm very glad that I did. Thorough, excellent, and I hope that this edition will be the first of many. As this rapidly maturing field scales and matures I think that prompt engineering will be an essential discipline to master. Pick up this text to get a good foothold on things.
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Reviewed in the United States on August 3, 2024
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Scott J. Pearson
Birmingham, US
★★★★★ 4
Understanding AI prompts as a science
Format: Audiobook
Prompt engineering is the art and science of finding the right words to generate the right responses from artificial intelligence (AI). It's becoming a skill in-demand in today's workplaces. It's also becoming an essential skill for life. To understand prompt engineering, you must understand how AI tools understand their inputs. This book explains that to you in many forms. It covers prompting as it intersects all the major AI disciplines, like general prompts (as in a ChatBot), fine-tuning, and retrieval-augmented generation (RAG). It also introduces how prompting intersects a couple of image-generation tools. As a scientist, I appreciate the theoretical approach to these practical matters. Too many people are hacks at AI these days, and any technical understanding can rapidly advance an individual's effectiveness. Prompt engineering is often made fun of as a "soft" topic, but as this book demonstrates, it intersects all the major AI areas. Presumably less garbage in means less garbage out. This book shows how you can make that take place. As typical for O'Reilly materials, this book appeals to people who desire an intermediate-to-advanced understanding of how AI works. It's not for the casual user. Anyone technical involved in professional knowledge generation using AI can benefit from understanding the dynamics "under the hood." It's a good, though perhaps not ground-breaking, textbook for those of us unable to take a class in the subject. Prompt engineering may be a soft topic to many, but books like this ground the field in the science that can make or break a digital or software product.
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Reviewed in the United States on December 13, 2025
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Jason Bolton
Draper, US
★★★★★ 5
Great book
Format: Paperback
Great book! It is helpful as I work towards my Masters of Science in Applied Artificial Intelligence
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Reviewed in the United States on December 20, 2025
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James Gianoglio
Lexington, US
★★★★★ 5
Comprehensive Guide with Practical Insights
Format: Paperback
This is a solid book for understanding the art and science of working with LLMs and other generative AI models. I always struggled with getting the output I was looking for, and wasn't sure how best to "ask" the models for what I wanted. This book did a great job of laying out the strategies and practical guidance to craft the prompts. There were a lot of tips and tricks, but the overall understanding and framework around prompt engineering has been super useful.
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Reviewed in the United States on June 25, 2024

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