From cyclo cross warm up to favorite bib short extender and every ride application in between, Ibex made these leg warmers to take advantage of heavyweight wool ponte knit in a cycling focused accessory capable of extending any riding season. Achilles zipper keeps these easy on easy off so pre race starts or mid day strip downs don't take much time. 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''. Material: Wool, Nylon, Spandex.