These easy on and off Zip Leg Warmers are constructed of Garneau's Heatmaxx knit material - perfect for a wide range of climates as it provides warmth and comfort without bulkiness. Zip Leg Warmers are stretchy and warm and have a brushed back for next to your skin comfort. 9" ankle zips make sliding in and out easier and inner leg grippers keep 'em where they're supposed to be. Flatlock seams.