Solid Seat Insert for Wheelchair – 20" W x 16" D Supportive Cushion BaseThe Solid Seat Insert for Wheelchairs is designed to improve comfort, posture, and stability for users requiring extra support. Measuring 20" wide by 16" deep, this insert provides a firm and supportive surface to reduce sagging and promote proper seating alignment. Crafted from durable yet lightweight materials, it ensures long lasting performance while remaining easy to install or remove. Compatible with most standard wheelchair models, this insert