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The Adaptdefy Underseat Bag for rigid wheelchairs transforms the empty space beneath your seat into secure, easy-to-reach storage. Specifically designed for rigid wheelchairs, it keeps your essentials close and protected without adding bulk or interfering with your chair's function.
Available in three sizes, for wheelchairs with seat widths from 11 in to 22 in (28cm to 60cm). The Adaptdefy Underseat Bag for rigid wheelchairs offers a large carrying capacity, with a spacious main pocket for large items. The dedicated front pocket gives quick access to essentials like your phone, wallet, keys, or snacks.
The adjustable Velcro straps allow for fast, easy, and tool-free installation. Four quick-release buckles allow you to remove the bag while seated. Simply unclip the buckles and place the bag on your lap to easily access items, repack, or pass through security checks.
Built from lived experience and feedback from wheelchair users, each feature is designed to enhance independence and accessibility. Find the perfect fit for your chair and lifestyle, so you can carry what you need with comfort and confidence.
Three sizes, find your perfect fit: Whatever you carry, there's a size built for it. The Adaptdefy Underseat Bag suits chairs from 11 to 22 inches wide (28cm to 60cm).
Quick-release buckles: The bag unclips from the mounting straps in seconds, so you can grab something, repack, or get through security without missing a beat.
Tool-free install: Adjustable straps offer a flexible fit for most manual rigid wheelchairs. Secure your bag in seconds using two strong Velcro straps, without affecting how your chair works.
Deep, organised storage: A dedicated front pocket gives quick access to essentials like your phone, wallet, keys, or snacks, while the spacious main pocket holds everything else.
Colour-coded, easy-pull zippers: Colour-coded zips make each pocket easy to identify, and a finger loop on every zip makes them easy to open.
Water-resistant material: The base and interior lining protect your belongings from rain, spills, and everyday use. Wipe clean in seconds.
Lightweight yet strong: Minimal weight added to your chair, with your items held securely under your seat for balance.
The Adaptdefy Underseat Bag is designed to fit most manual, rigid-frame wheelchairs.
Mounts around your frame using strong, adjustable Velcro straps
Quick-release buckles let you remove the bag while the mount stays in place
Designed to fit around existing hardware, such as brakes, wheels, or footrests.
Check the specifications and sizing matrix to find your recommended size
If in doubt, contact us, and we'll offer fitting advice before you order
The Adaptdefy Underseat Bag is designed to fit most manual, rigid-frame wheelchairs.
If in doubt, contact us before purchase.

Accessible by design.
Huge storage capacity.
Your wallet, keys, phone, medical supplies, tools, snacks, and more are all within easy reach.

Three sizes - find your perfect fit.
Whatever you carry, there's a size built for it. Suits chairs from 11 to 22 inches wide (28cm to 60cm).
Quick-release corner buckles.
Four quick-release buckles let you remove the bag in seconds, from a seated position.
6 new upgrades.
In this video, you’ll see all six upgrades we made from the first version of this bag.
Frequently asked questions.
We're here to help.
What size fits my chair?
For your best fit, check the width of your wheelchair against the sizing matrix. There may be a few options suitable for your chair.
If you are unsure, please contact us; we'll help you choose the best fit before you order.
Can I use the wheelchair bag with other Adaptdefy products like LapStacker Flex?
Yes. The bag works with LapStacker without interfering with your chair. The quick-release buckles let you easily remove the bag while keeping the mounting straps attached.
Can I fit my Laptop in a wheelchair bag?
That depends on the size of your laptop. The medium holds tablets and compact laptops. The large underseat bag can accommodate laptops up to 15-inches.
What changed from the previous version?
We made many improvements from version 1 of our underseat bag. The most notable are the addition of sizes, quick-release buckles, colour-coded zippers and an increase in front pocket size.
How do I take the bag off?
Unclip the four corner buckles and lift the bag, the straps stay mounted on your chair. To re-fit under your seat, line up one of the buckles, secure, then move to the next, and so on.
More questions?
Visit our FAQ page for more frequently asked questions.






