Seamless, Pole Pocket, Grommets on Two Sides, Machine Washable in Cold Water, Matte Finish This 9 x 10' Rich Black Wrinkle-Resistant Polyester Backdrop from Westcott is a must-have for studio photographers. The matte backdrop is constructed from heavy-duty wrinkle-resistant polyester that is machine washable in cold water. It has grommets on two sides and a 3 pole pocket that makes it easy to hang.