Spalding Womens/Ladies Response Long Sleeve Sports Base Layer Polyester, Elastane, Long sleeve base layer designed to be worn alone or under training kit to aid performance and recovery. Engineered fabric with built in UV protection Factor 50+, that combines stretch and compression qualities to help maintain core body temperature during intense bursts of activity and rest. Ergonomically cut for a close and supportive fit and micro-flat lock seams to eliminate friction and irritation. Mesh underarm panels for improved ventilation. Printed Spalding logo left sleeve and reverse at neck.