Product details: 82% polyester, 18% spandex Biker shorts feature the Feline Apparel logo on the front. These shorts are super stretchy. Can be worn leisurely or to work out in. Runs true to size. Due to nature of the dyeing process, there may be slight inconsistencies in color of the garment. Model is wearing size medium. CARE INSTRUCTIONS: For best results and so that your garments have a long lasting lifestyle, turn clothing inside out first before you wash. Machine wash on cold cycle. Do not bleach. Do not tumble dry. Do not dry clean.