"Travel just got smarter -- great performance and naturally helps keep feet odor free Wick Dry? Health System keeps feet dry and comfortable X-Static? nylon throughout foot to control odor Moisture management CoolMax? fiber Turned welt top with elastic stay-up leg MoistAir Escape PanelTM along foot and over toes to move excess heat and moisture away Smooth jersey panel over arch for shoe comfort Fully cushioned sole Lin-toe? toe closure for ""no seam"" feel Lycra? throughout for form fitting comfort Crew Medium weight Contents: 68% CoolMax? polyester, 28% nylon, 2% X-static? nylon, 2% Lycra? spandex"