Invacare Cushion Rigidizer 18"x 20" 4499

The Invacare Matrx Cushion Rigidizer is a lightweight plastic seat insert that fits between the seat rails for level support eliminating the hammock effect caused by seat upholstery.
Provides additional stability and prevents sagging from sling style seats. Easy to clean, easy to install. Recommended for wheelchairs with sling seat upholstery.