Performance Base: Aerocell™ polyurethane for high energy return

It makes the shoe more durable and lighter

quick-drying mesh upper keeps your feet cool and comfortable

Reversible webbing used for the lace eyelets and the heel tab

SMARTWOOL Performance Hike Low WOMEN'S Size:M Performance Base: Aerocell™ polyurethane forFor dependably comfortable, reliably durable womens wool hiking socks, these are just the thing. Constructed from a blend of soft, responsibly sourced Merino wool and recycled nylon for sustainability, this sock will wow you with its features and charm you with its saucy style. Its numerous stay put and perfect fit attributes will have you practically skipping along every trail. Hike on! Sock Height: Crew Sock Cushion: Light Cushion Indestructawool