Foam Ninja Polyethylene Foam Sheet 12 x 12 x 1/2 Inch Thick - 2 Pack Black Charcoal - Custom Foam Inserts High Density Closed Cell PE Case Packaging Shipping: Amazon.com: Industrial & Scientific
926022-4 Open Cell/Closed Cell Foam Sheet, Polyurethane/Polyethylene, 2" Thick, 24" W X 48" L, Charcoal | Imperial Supplies
Closed Cell Neoprene Sponge Rubber Foam Sheet 1/8" x 40" x 42" (Grey): Amazon.com: Industrial & Scientific
USA Industrials - Closed Cell Polyethylene Foam: 48″ Wide x 96″ Long, White - 95883989 - MSC Industrial Supply
Rubber-Cal Closed Cell Sponge Rubber Neoprene 1/2 in. x 39 in. x 78 in. Black Foam Rubber Sheet 02-128-0500 - The Home Depot