JMS Performance Full Length Run Tight88% polyester/12% spandex.>Legging has wide waistband with smooth elastic inside.Wicks moisture to keep you cool and dry.Sewn-in gusset for better fit and ease of movement.Form fitting silhouette for aerodynamic movement.28.5 inch inseam.Machine wash cold with like colors; remove promptly. Use only non-chlorine bleach when needed. Tumble dry low. Cool iron if needed.