Cut for performance and protection, the On Mid Sock will keep you going. The Mid Sock sits between the On Low Sock and On High Sock, so it ends just above your ankle bone. The mid-length cut gives you protection against dirt, debris and shoes that can chafe. A polyamide and elastane blend makes the sock soft and stretchy, and an anatomical shape hugs your foot so there’s no excess fabric. It’s the ideal sock for when the weather cools and you need extra protection against the cold.