ASICS Unisex Fuzex Single Tab 63% Polyamide Nylon/35% Polypropylene/2% Elastane Imported Polypropylene base for Ultra lightweight feel and superior moisture wicking Honeycomb-sculpted mesh throughout sock provides breathability Reflective detailing for visibility W" heel gore fit, ASICS single tab ankle fit helps protect against irritation Seamless toe eliminates bulky toe seam and provides greater comfort