Soft poly/spandex material with the look of leather. One piece fitted stretch cover. Machine washable for easy care. Treated with Scotchguard for extra protection. Wrinkle-resistant. Refresh and redecorate with a custom look. Available in rich brown. Fits wing chairs 33W x 42H inches. Stretch Leather Wing Chair Slipcover Video. The Stretch cover is a one-piece cover made from a soft poly/cotton blend and spandex material. Its stretching qualities offer a clean, tailored look for both box and T-cushion style furniture. It features an adjustable arm width and inner pleats to minimize tucking.