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Breathe Easy with Science-Backed Protection
Rather good news: we've engineered a filter so splendid it rather actually works. The Nanofibre Air Filter captures 99.6% of viruses, bacteria and pollutants down to 0.03 microns, which is rather impressively smaller than Covid-19 particles (0.06 to 0.5 microns) and bacteria (0.3 microns). Think of it as your personal bodyguard, except invisible and far less awkward at dinner parties.
Why Choose Our Nanofibre Air Filter
Triple Layer Technology: A marvellous sandwich of nanofibres and activated carbon work together via electrostatic attraction, trapping particles before they ever stood a chance.
Lasts 200 Hours: Each filter delivers continuous 99.6% protection before requiring a refresh. Properly efficient.
Genuinely Breathable: Made from biocompatible hydrophobic material that stays dry and flexible, so you won't feel like you're suffocating or re-breathing carbon dioxide like you would in lesser respirators. Rather a relief.
Reusable and Restorable: Pop the filter and mask in a 60-degree oven to neutralise trapped particles, then carry on. No faffing about.
Cuts to Size: Use it in your existing mask or any mask with a filter pocket. We shan't judge your choice.
Independently Tested: Certified to ASTM F2100, ASTM FT101 and EN 1486 standards. All above-board.
Product Details
Filtration Rating: 99.6% effective protection
Particle Capture: Down to 0.03 microns
Lifespan: 200 hours of continuous use
Material: Biocompatible hydrophobic nanofibres with activated carbon layer
Available in: Single filters or 5-pack bundles (save 17% on the bundle)
Care: Bake at 60 degrees Celsius to sanitise and extend usability during the 200-hour period
Order your filter today and protect yourself and those around you with genuinely world-class filtration. After all, looking after one another is rather rather important.
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!
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 Have Lots More Like This.........
Hello, we are Sostter....
Sostter began, as all good ideas do, with a lively conversation and a shared sense of frustration. Why had the world of independent design become so serious, so samey, so… beige? Where was the spark, the imagination, the sheer joy of discovering something that made you stop and stare?
We dreamt of a marketplace that celebrated difference — where curious minds could explore a world of independent brands, design-led makers, and thoughtful artisans. A space that felt exciting, human, and beautifully imperfect.
Today, Sostter brings together remarkable people and their creations — from London to Lausanne, Brooklyn to Berlin — uniting makers and discoverers through craftsmanship, creativity, and conscience. Every object tells a story, and every purchase supports an independent brand doing things differently.
This is just the beginning. But enough about us — step inside, explore our world, and see what catches your imagination.
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!