Merino Wool Mid Bird Sock is a breathable Merino-blend sock designed for bouldering, hiking, rock approaches, and trail runs, built for thermoregulation with targeted cushioning and breathable comfort. Product Type: unisex wool-blend socks Material: Merino wool blended with nylon Weight: 48g Light, soft, breathable construction with ultra-fine yarns Targeted cushioning and a fit designed to help prevent slipping and bunching Mid-height collar helps protect and seal out trail debris For cooler days on the trail, pair with a Men’s fleece jacket or a Women’s fleece jacket . Light, soft, and breathable, these socks give you targeted cushioning, technical performance, and natural comfort on runs, hikes, and approaches. Ultra-fine yarns blend Merino wool – a material known for natural odour resistance and thermal management – with nylon for added durability. The construction delivers exceptional fit, support, aligns with the fit of our shoes, and helps prevent slipping and bunching. The mid-height collar provides protection and helps seal out trail debris.