PERFORMANCE TECHNOLOGIES: Provides support while giving you a great feel of the skate Features an anatomical left and right fit and compression arch support Features Merino Wool to transport sweat and moisture away from the skin so you're not left feeling wet, cold, and clammy during your skate Blended with synthetic fibers so you can still get the feel and durability of our traditional pro sock The sock is thinner overall and knitted to provide a forward lean to prevent bunching Targeted zones where the material is thinner to relieve pressure from the skate on the medial side