Icebreaker M Hike+ Med Crew Colour:Black Obsidian Soft merino fibers that regulate Soft merino fibers that regulate body temperature in all weather conditions and resists odors This product is made from at least 50% recycled and renewable materials Features A Anatomical toe box for unique left and right fit B Targeted cushioning maximizes fit and comfort C Achilles support keeps your sock in place D Reinforced heel and toe for durability and strength E Instep support for stability F Seamless toe closure to reduce bulk and prevent blisters G Breathe zone for improved ventilation H Comfort cuff Fabric content 60% Merino wool The Hike+ Medium Crew socks feature an anatomical sculpted and medium cushioned