40 denier red knee high socks. Brand new to our sock range, these red knee highs have GREAT stretch to accommodate to all size calves. Comfy to wear and soft to the touch, these socks are made from a mixture of nylon and spandex, the nylon creates comfort and the spandex allows for the stretch. Style with a mini skirt and your chunky loafers for a spring summer look or layer these underneath your trousers from a work winter look.