2XU Men's Thermal Long Sleeve Compression Top 80% Nylon/20% Elastane Imported Utilizes a brushed loft interior thermal layer for a perfect combination of compression power, flexibility & warmth Supports and protects shoulders, deltoids, back and core muscle groups Muscle Containment for reduced vibrations & oscillation, less muscle fatigue & damage Medical Circular 70 Denier knit construction for 360 degree consistent yet powerful pressure Invista LYCRA for Certified Gradient Compression 80% Nylon, 20% Lycra Sport Graduated Compression with 2XU's Powerful PWX FLEX fabric promotes circulation in the extremities. Say goodbye to cold hands and hello to less fatigue while outdoors in cold weather Great for Skiing, Snowboarding, Training, Competing, and all Cold Weather Sports and Activities Machine washable, line dry, no bleach Thailand