UNIQLO Heattech High Socks, Set of 4 Colors: Dark Gray (2 pairs), Navy (2 pairs) These are the Heattech high socks from a while back, so the fabric is thicker, the length is longer, and they stretch well. Also, the ribbed cuffs are sturdy, so they didn't slip down. I mostly wore tights and leggings, so I didn't wear these very often. The cuffs haven't stretched out, and there are no holes, so I think they are in relatively good condition. The navy ones have some slight pilling on the heels.