$60.99 Adhesive Rubber Black Foam Sheet Roll 1/4''x12x54'' Closed Cell Sponge Neoprene | eBay
VERY STRONG 1/4 Black Foam Board UltraBoard Plus / Rigid | Etsy
Cleverbrand Reticulated Black Foam Sheet - 12 Wide X 4' Long X 3/4 Thick: 10 PPI: Amazon.com 
