The Coolmesh(TM)ll is our #1 selling style worldwide! It&&';;s the most breathable lightweight Double Layer sock and is designed for a minimal feel. Ideal as running socks, walking socks, or light hiking socks. Great travel socks that dry quickly and are ready for use the next morning. Features Mesh panel for enhanced airflow and cooler feet Recycled Polyester performance fibers improve moisture management and increased durability Stabilizer Zone(TM) in arch locks sock in place Styles and colors for all tastes Blister-Free socks - No Blisters, Guaranteed! Fiber ContentInner Layer: 70% Recycled Polyester, 26% Nylon, 4% LycraA(R)Outer Layer: 71% Recycled Polyester, 24% Nylon, 5% LycraA(R) Double Layer Seamless Toe Wrightsock&';s Double Layer styles offer a seamless toe like most performance socks do these days; however, as you can see on the below images, Wrightsock&';s seamless toe looks a bit different. This is due to the required attachments that connect the inner and outer layers together for our Double Layer system. Even though it looks a bit odd, our seamless toe acts and feels the same on your foot as any other seamless toe design.