Dual Comfort Chair Cushion 18 W x 16 D X 4 H Rollator Parts Accessories * Skillbuilders© premium rolls and 48750 * Skillbuilders© premium rolls and wedges have an integral waterproof polyurethane coating that is easily maintained * Half rolls combine stability of a wedge with the positioning versatility of a roll * Use with hook on bottom to anchor roll * Provides stable base for knee flexion and extension Model Number: A10382 Designed for long term users of wheelchairs * Provides comfort for an entire seat or chair with soft comfortable covoluted foam and ties to secure it * Seat size is 18 W x 16 D X 4 H Back Size is 18 16 x 3 * Helps promote good posture while cushioning the body preventing sores and offering a slip free seat