Description
The Symbia 2.5 is a seat cushion made by Orthex in Canada, 18 x 15 in and 2.5 in high. It goes on the chair you already have, shaped by the maker to place the hips above the knees. A zipper at the back sets a slight decline, which Orthex says follows the natural curve of the lower back.
Who it suits
- Anyone who sits for long stretches at a desk, in a car or at a table and wants the hips above the knees.
- People who find a hard chair uncomfortable after an hour or two.
Check the fit
- One size: 18 in wide, 15 in deep and 2.5 in high (45.7 x 38.1 x 6.4 cm).
- Check that 18 x 15 in fits the chair seat, with the zipper facing the backrest.
- No adaptation period is needed, the maker states.
- The maker publishes no weight limit for it, so we print none.
The foam and the cover
- The top layer is gel infused viscoelastic memory foam, over a support structure of high resilience polyurethane foam that the maker names Velva.
- The cover is a breathable knitted coconut polyester that machine washes cold; lay it flat to dry, with no ironing and no bleach.
- The foam is not washable. Clean it locally with a damp cloth only.
- Replacement covers are sold on their own, and we can order one with it.
- Orthex describes a pressure balancing system, in its words spreading body weight evenly to prevent discomfort and stress on the joints.
- The five year warranty is Orthex's own, from the date of purchase.
How it compares
This is a comfort cushion for a regular chair, not a wheelchair cushion. For a wheelchair seat see our foam wheelchair cushions or the wider cushion range.
Frequently asked questions
Can I use it in a wheelchair?
The maker builds it for a regular chair and publishes no weight limit. For a wheelchair seat, see our wheelchair cushions.
What does the zipper at the back do?
It sits inside the cover at the back and sets a slight decline, which the maker says follows the curve of the lower back. Place it facing the backrest.
Can I buy just the cover?
Yes. Orthex sells the knitted coconut cover on its own and we can order one with the cushion. Ask us through contact.
Who handles the warranty?
The five year warranty is Orthex's own and claims go to them. Our warranty and service page explains how we help with a claim.
Funding help
Funding may help: see who may help pay. Our team can point you to the route that fits.
Specifications
- Cover
- Breathable knitted coconut polyester, machine wash cold, lay flat to dry, no ironing and no bleach
- Size
- One size, 18 x 15 x 2.5 in (45.7 x 38.1 x 6.4 cm)
- Placement
- On the surface you want to sit on; the zipper inside the back of the cover sets a slight decline, the maker says
- Maker
- Orthex Canada
- Weight limit
- None published by the maker
- Foam
- Gel infused viscoelastic memory foam over a support structure of high resilience polyurethane foam, which the maker names Velva
- Foam care
- Clean the foam locally with a damp cloth only; the foam is not washable
- Adaptation period
- None required, the maker states
- Replacement covers
- Sold on their own by the maker, and we can order one with the cushion
- Supported regions
- Buttocks and hamstrings
- Warranty
- Five years from the date of purchase, against manufacturing defects or irregular use, claimed directly with Orthex Canada
- Product type
- Ergonomic seat cushion that sits on an existing chair, Symbia 2.5
Figures from the manufacturer. Options and seat sizes can change them; we confirm yours before ordering.
Delivery and service
Delivery and setup
We deliver and set up equipment across Toronto and the GTA, and show you how everything works. Custom and special-order products can take longer; we confirm timing with you before delivery.
Service and repairs
Our technicians service what we sell, at home or in our shop.
Try before you buy
Visit a showroom in Etobicoke or Brampton to try products first, or book a free home assessment.
Warranty
Mobility store warranty terms
These are Mobility's purchase and service policy terms, separate from any manufacturer warranty coverage.
1 year on parts.
Read the warranty and service policy for the full terms.
Questions about this product?
Talk to our team, try it in a showroom, or book a free home assessment. We help with sizing and funding.










