2XU Women's Thermal Compression Long Sleeve Top lycra-blend Imported Hang Dry Supports and protects shoulders, deltoids, back and core muscle groups Muscle Containment for reduced vibration and oscillation, less muscle fatigue and damage Utilizes a brushed loft interior thermal layer for a perfect combination of compression power, flexibility and warmth Certified 70 Denier Invista LYCRA Compression with a 360 degree fabric knit construction for a consistent yet powerful pressure Lightweight and breathable fabric with SPF 50+ sun protection for all day comfort