These Drymax Hyper Thin V4 Mini Crew Running Socks are designed to be the world's lightest running socks-each sock weighs less than half an ounce! Plus, the dual-layer sweat removal system offers better protection from blisters than other thin running socks. Inner layer of Drymax quickly moves moisture off the skin to the outer absorbent layer. Medium-density padding, rather than thick padding, protects feet without adversely affecting the fit of your shoes. Vented arch brace adds breathability.