Foam Wheelchair Cushion Plaid 18 W x 16 D x 3 Plaid * 18 W x 16 D x 3 * Custom sizes available * Optional solid seat inserts available * Designed to provide comfort and basic protection for the wheelchair bound patient * Available with a poly/cotton cover * Medium density fire-retardant foam Shipping Carton Size: 20 L x 18 W x 6 H