Sub Sports Kids Compression Long Sleeve Vest Top T-Shirt Base Layer Sports Wear Midweight long sleeve compression base layer with 4-way stretch to give a responsive fit while wearing. Moisture-wicking fabric transports sweat away from the body during high intensity performance. Flat lock seams prevent irritation for a chafe-free fit. The advanced high-wicking fabric helps you to stay dry by transporting moisture away from the skin, whilst its tight fit provides targeted compression to your key muscle groups, increasing your power and endurance. Ideal for all sports including running, cycling, triathlon, OCR, rugby, football, fitness, gym, golf, tennis. This is a close fitting garment and is designed to feel tight against the body. If you prefer a slightly less compressive fit, move up a size. Machine washable at 30 degrees. 82% Nylon, 18% Elastane.