2XU Women's Elite Compression Short Sleeve Top lycra-blend Imported Supports and protects shoulders, deltoids, back and core muscle groups, helping reduce muscle swelling and soreness Muscle containment for reduced vibration and oscillation, less muscle fatigue and damage Maintains better postural position, improves breathing and agility 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