
Responsible Rucksack 21L - Black
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Discover the Everyday Versatility of the Responsible Rucksack
Embrace a lifestyle of convenience and style with the Responsible Rucksack. Crafted from premium British cotton canvas and expertly designed in Estonia, this rucksack is your perfect companion for any occasion, whether it's heading to the office, enjoying a picnic in the park, rushing to the gym, or handling daily errands hands-free.
Why You'll Love It:
- Versatile Storage: Easily pack your essentials, whether it's an extra layer for cool weather, your favorite book, a water bottle, or your 13" laptop, all fitting seamlessly into designated compartments.
- Functional Simplicity: The rucksack combines functionality with minimalism, offering all you need without adding unnecessary details.
- Quality Material: Made from 100% cotton canvas that ensures durability and timeless style, complete with a water-repellent finish for extra protection.
- Environmentally Conscious: Comes packed in a reusable canvas gift bag, echoing our commitment to sustainability and minimal waste.
Product Details:
- Material: 100% British cotton canvas
- Size: 29 cm x 14 cm x 51 cm
- Capacity: 21 L
- Water Resistance: Non-waxed water-repellent finish
- Comfort: Adjustable shoulder straps for a perfect fit
Join thousands who trust the Responsible Rucksack for its exceptional quality and design. Order yours today and experience unmatched functionality and style.
SHIPPING + RETURNS
THE RATHER IMPORTANT BITS
This rather lovely piece ships directly from our brand partner - we work with independent brands who are absolutely brilliant and work frightfully hard to create beautiful things.
SHIPPING DESTINATIONS
Now, here's the thing - our wonderful brand partners ship to lots of different places, but not all of them can ship worldwide.
Some are brilliant at international shipping, others prefer to keep things closer to home.
At checkout, you'll see exactly where this particular brand can send your goodies.
We're terribly sorry, but shipping costs do vary rather wildly depending on where you are in the world. The exact figures pop up at checkout - no nasty surprises!
RETURNS
You have 14 days to return items.
Now, we absolutely adore our brand partners - they work incredibly hard and we do try to support them as much as we possibly can. So I'm rather afraid we have to pass the return postage costs back to you. Frightfully sorry about that!
🌍 PLEASE CHOOSE THOUGHTFULLY:
Our wonderful partners put their hearts into everything they make.
Ordering multiple sizes to try at home is rather hard on our planet and makes things jolly difficult for these brilliant independent creators.
When in doubt, do ask us first!
The brands we work with all have a chat option, and they love to chat!
PAYMENT
We're frightfully modern and accept all the usual suspects:
Visa, Mastercard, American Express, PayPal, Apple Pay, Google Pay, and Shop Pay
SECURE AS HOUSES
Everything's properly encrypted and secure - your details are safer than the Crown Jewels!
All prices in lovely British pounds £ GBP, though international chaps will see converted prices.
Any payment pickle? We're here to help sort things out! Contact us

We are Sostter
We met as children. Grew up a few streets apart. Built dens, rode bikes, and eventually — built Sostter.
It started with a shared love of objects that meant something…things with a past, or at least a purpose.
Now, Sostter is our grown-up version of a treasure hunt: a space where design meets storytelling.
We curate independent brands, one-of-a-kind finds, and everyday essentials with character.
Giving Back
We’re proud to support Sutton Night Watch, a grassroots UK charity making a real difference in the lives of those facing homelessness. Through regular donations of stock, supplies, and essentials, we back their mission to offer warmth, dignity, and practical help to anyone in need — right where it matters most.
Sell with us
Sostter partners with independent brands that intrigue, inspire, and bring something genuinely different to the world of fashion, design, and living. Join us!