Amazon.com: FoamRush 0.5" x 12" x 18" Charcoal High Density Upholstery Foam Cushion (Upholstery Sheet, Foam Padding, Seat Replacement, Chair Cushion Replacement, Square Foam, Wheelchair Seat Cushion) Made in USA : Arts,
200mm x 200mm High Density Closed Cell Foam Sheet Upholstery Foam Black 3/5/10mm | eBay
Amazon.com: 2 lb High Density Volara Closed Cell Foam - Auto, Upholstery, Crafts By the yard BTY Width: 60'' Thickness: 1/8'' COLOR : BLACK : Arts, Crafts & Sewing