The Slim Air Refiner
Designed for compact areas, the Slim keeps moisture and odours in check in cupboards, drawers, wardrobes, shoes, boots and anywhere else that needs a little extra help. Drop it in place and let it look after the smaller spaces that often get forgotten.
Please note: Colour tones may vary across different lighting and screens.
What is an Air Refiner?
21Captains Air Refiners are designed to naturally absorb excess moisture and neutralise odours in enclosed spaces.
Using activated charcoal and breathable recycled fabrics, they work quietly in the background to help reduce dampness, condensation and smells!
No power, no refills and no ongoing maintenance.
Where Can I Use The Slim?
The Slim Air Refiner is ideal for smaller, enclosed spaces such as cupboards, drawers, bathrooms, fridges and compact storage areas.
It’s just as effective on the road — use it in cars, 4x4s, rooftop tents, caravans and boats, or anywhere moisture and odours tend to build up in tighter spaces.
Why I Need The Slim?
21Captains Slim Air Refiners are a sustainable solution for managing moisture and odours in smaller, enclosed spaces.
Handmade in Australia using natural materials, they’re long-lasting, require no refills and help reduce reliance on single-use products — making them a practical, low-maintenance choice for everyday storage and travel spaces.
Coverage
One Slim Air Refiner is designed for small, enclosed spaces.
Ideal for areas like canopies, rooftop tents, tunnel boots, cupboards, shoe storage, gym bags, drawers and fridges — anywhere moisture and odours build up in tighter spaces.
Two Slim Air Refiners provide similar coverage to one OG Air Refiner. For larger or higher-moisture spaces, we recommend using multiple Slims.
Made Sustainable
We design and make every Slim Air Refiner with sustainability in mind.
The fabric of each Slim is made from recycled plastic bottles, giving post-consumer waste a second life.
Inside, we use only high-quality coconut-shell activated charcoal — nothing else.
The charcoal is housed in a specially designed permeable fabric, allowing it to work effectively while reducing waste and avoiding single-use products.
Proudly Australian Made
Each Air Refiner is Proudly designed and hand-made in Brisbane, Australia.
Why do I have to pay for shipping?
Shipping across Australia typically costs between $12–$25 per parcel. We cover a large portion of this cost on every order to keep pricing fair, while ensuring your Air Refiners arrive safely and promptly.
