Defiance - Underseat Wheelchair Bag
Defy limits. Hold anything.
Defiance is an underseat wheelchair bag designed to store what you need, within easy reach. It delivers secure and practical storage that works with most rigid frame wheelchairs. Hidden neatly under your seat, it stays out of the way while keeping your essentials close, accessible, and protected.
With a generous 10L capacity, Defiance is sized to carry what you actually need without becoming bulky or intrusive. The thoughtfully proportioned design maximises usable space while staying compact under your seat, so you can move with confidence.
Built from lived experience, it solves the common frustrations of wheelchair bags, with a clean, minimal solution that works seamlessly with your wheelchair.
Every detail supports independence with six premium features:
Lightweight yet durable: weighing in at only 300g, it balances a generous storage capacity in a streamlined design that won’t impede performance or add unnecessary bulk.
Fast, tool-free installation: Adjustable straps made with strong Velcro make installation fast and easy. Also allows you to remove the bag when needed.
Versatile 2-pocket design: A dedicated front pocket gives quick access to essentials like your phone, wallet, keys, or snacks, while the spacious main pocket holds everything else you need.
Water-resistant material: Protects your belongings from rain, spills, and everyday use. Interior lining wipes clean in seconds.
Easy-pull zippers: Designed for limited grip and strength, reducing effort and frustration when accessing your items.
Universal fit: Compatible with most chairs with seat widths from 12” to 22” (30 cm - 55 cm.) Velcro straps secure the bag firmly in place without interfering with your chair’s function.
The Defiance Underseat Bag is designed to fit securely beneath most rigid frame wheelchairs.
Suits chair widths from 12” to 22” 30cm - 55cm
Mounts under the seat using strong, adjustable velcro straps
Does not interfere with brakes, wheels, or footrests
If in doubt, contact us before purchase.
Volume: 10 L
Weight: 300 g (11 oz)
Width: 320 mm (12.6 in)
Depth: 210 mm (8.3 in)
Height (front face): 150 mm (5.9 in)
Height (rear face): 120 mm (4.7 in)
Strap length: Suitable for wheelchairs 12 - 22” (30 - 56 cm) wide.
Accessible by design.
Your essentials, within easy reach.
Sits under your seat so your essentials are easy to reach and harder for pickpockets to access. The 10L capacity holds everyday items like your phone, wallet, keys, snacks, and more.
Easy installation with velcro straps.
Install and remove the bag without tools or chair modifications. Simply wrap the strong Velcro straps around the frame under your seat, tighten to fit, and press down to secure it in place.
Designed from lived experience.
Packed with premium features that support independence. From easy-pull zippers to water-resistant, easy-clean materials, every detail is built to work seamlessly with your wheelchair.
Installation guide.
In this video, Mike walks you through how to install the Defiance Underseat Wheelchair Bag using the pre-attached adjustable velcro straps
6 premium features.
In this video, you’ll see all six features that make Defiance different. It’s built from lived experience, with practical details that support independence.
Have a question?
We're here to help.
Can I use this bag with other Adaptdefy products like LapStacker Flex?
Yes. Defiance is designed to work alongside other Adaptdefy products, including LapStacker Flex, without getting in the way of your chair’s function.
Is the bag insulated?
No. Defiance is not insulated, but it is made with durable, water-resistant materials to help protect your items from rain and spills.
Is the bag easy to open for users with limited grip or strength?
Yes. Defiance uses easy-pull zipper pulls designed to reduce effort, making it easier to open and close for users with limited grip or hand strength.
More questions?
Visit our FAQ page for more frequently asked questions.