The 2XU Elite Compression Alpine sock allows you to Ski/Ride longer w/less fatigue + more comfort through graduated compression to enhance blood flow * Structured padding in the shin area for maximum comfort and warmth while still allowing sock to slide easily into boot * Engineered heel pocket with Ankle and Achilles support for a precise fit * 2XU - The official Performance Compression Partner of the US Ski Team - Alpine, Snowboard, Nordic, and Freestyle * Linked toe cage and relaxed forefoot area for maximum compatibility with stock and custom footbeds