SUGOi Mid Zero Leg Warmer 88% Polyester 12% Spandex; cool wash, on bleach, hang dry, no iron, no dry clean MidZero is a full stretch wicking midweight base layer that is fleeced on the inside for amazing comfort Knee hinge allows greater range of motion with flat seams for increased comfort 7 inch locking ankle zippers and sharp reflective piping along ankle zips Canada