Ibex Outdoor Clothing Merino Wool Leg Warmer Merino, Wool, Spandex Made in US Heavyweight Merino stretch leg warmer Zipper at Achilles tendon Circumference at upper leg opening: XS = 17", S= 17.5", M = 18", L = 18.5", XL = 19" Lengths: XS = 24", S = 25", M = 26", L = 27", XL = 28" Flat lock seams