Ultra-lightweight, durable and odor-resistant merino socks designed for maximum comfort and premium fit, our Run+ Ultralight Micro socks are ideal for all-round trail running performance. Anatomical toe box for unique left and right fit Sculptured cushion maximizes fit and comfort Achilles support keeps your sock in place Reinforced heel and toe for durability and strength Instep support for stability Seamless toe closure to reduce bulk and prevent blisters Breathe zone for improved ventilation