Pearl Izumis best selling cycle specific sock provides with smooth toe construction zoned ventilation channels & anatomic arch compression for superior performance & comfort The ELITE Transfer yarns provide superior moisture transfer The Ultra-smooth toe & Y heel designs offer articulated comfort Anatomic arch compression & asymmetrical left/right specific design for a performance fit Mesh ventilation over top of foot standard cuff or mini crew height Fabrics: 69% Polyester 27% nylon 4% spandex