Aero Tech Designs Pro Thermal Fleece Leg Warmers - Reflective Zippers 84% Polyester/16% Spandex Stretch Fleece Fabric with Knitted stretch fleece technically constructed to maximize (1) moisture management to wick away sweat, (2) stretch to allow comfortability, and (3) warmth to keep you out on the roads and trails longer Reflective ankle zippers increase visibility and make it easier to take the warmers off after a long ride Anatomically designed for freedom of movement without restriction, includes silicone elastic grippers at the thigh to keep the warmers comfortably in place through each pedal stroke Adult Sizes: S (28 waist; 30-32 inseam) M (32 waist; 32-34 inseam) L (34 waist; 32-34 inseam) XL (36 waist; 32-34 inseam) 2X (38 waist; 32-34 inseam) 3X (40 waist; 32-34 inseam) 84% Polyester/16% Spandex, six-way stretch fabric construction, flatlock stitching for smooth seams, UPV 50+ Ultraviolet protection