Alpinestars AT 8 Merino Socks Built for adventure riders facing cold, long-distance rides, the Alpinestars All Terra AT 8 Merino Wool Socks deliver warmth, comfort and lasting durability. Made from a 50 Merino wool and 50 polypropylene/Lycra blend, they help regulate temperature and manage moisture to keep feet dry and comfortable. Strategic mesh zones improve airflow, while dual-layer reinforcements at the toes, heel, arch and ankle help prevent blisters and add cushioning. A single-layer ribbed calf and arch enhance stretch and fit, with padded shin and ankle support for added comfort. Features: Merino wool and polypropylene/Lycra blend for elasticity and durability 3D tubular knit construction for an ergonomic contoured fit Breathable, single-layer calf and arch for optimal flexibility, and fit with minimal bulk Ribbed upper calf for stretch and a secure fit Dual-layer reinforcements at toes, heel and lower ankle, to prevent blisters and enhance durability Seamless, cushioned layers at pressure points for reduced friction 39 acrylic, 25 polyamide, 21 wool, 13 polypropylene, and 2 elastane blend