Image 1 of 2 Image 2 of 2 Athletic Biker Shorts $25.00 Black athletic biker shorts. 87% Polyester. 13% spandex. Size: Select Size YXS 5 YS 6/7 YM 8 YL 10/12 YXL 14/16 Quantity: Add To Cart Added! Black athletic biker shorts. 87% Polyester. 13% spandex.