Our Lightweight Merino Performance Crew Socks feature a soft terry-loop footbed to provide airy cushioning for your feet no matter how far you trek each day. Designed for a long life on the trail, they're made of a skin-friendly, itch-free blend of responsibly sourced merino wool. The sock yarns are then woven with nylon at a family-run factory in North Carolina. This merino/nylon blend (with 2% spandex) offers exceptional breathability with rugged durability and excellent stretch and recovery that lasts the lifetime of the sock. An engineered pattern on top of the foot provides additional breathability and stretch, and a mesh arch brace adds a snug fit to reduce chaffing. The rib-knit shaft holds the sock comfortably in place. The low-calf-height crew style protects your ankles from stubborn chaparral.