THE ATAK BASE LAYER COMPRESSION RANGE ALLOWS YOU TO PUSH YOURSELF TO THE LIMITS WITH CONFIDENCE.Renowned for its second skin feel whilst offering maximum support and protection. Above this, its brushed inner adds superior comfort to make this the ultimate in its category.SCIENTIFICALLY PROVEN - The fabric is scientifically proven to increase muscular strength and endurance as well as decrease recovery time.MUSCLE POWER - Increases muscle oxygenation and enhances circulation. Also reduces lactic acid build-up.MOISTURE MANAGEMENT - The moisture management wicking moves moisture away from the skin four times faster than other polyester materials.CLIMATE CONTROL - Optimal body temperature regulation in warm and cold weather conditions.Base Layer Material : 82% Polyamide 18% Elastine