Material Composition??80% Cotton /14% Spandex / 4% Polyurethane / 2% Polyester No Show Socks. Women No Show Socks Lot Pack:6 Pairs and fit women shoes 6-8.5 and 9-12. NON-SLIP, NOT FALLING??Three non-slip silicone will be firmly attached to the heel to prevent slipping.If it slips,We will replace it for free or a full refund! Thick Cushion No Show Socks: Cotton cushion applied on toe and ball absorbs sweat from toe (this part of the foot creates most sweat), protects your feet, lower the ball pain, anti blister and gives comfort to your feet while jogging, running, walking, workout, and even protect your ultra cute pedicure. LOW CUT SOCKS:Low-cut design let the socks invisible for most casual athletic shoes.like sperry topsiders, adidas stan smith, converse, vans, nike frees, superga, etc.This socks isn??t for low heel women shoes or extreme low loafers.