Sub Sports Mens Winter Warm Vest Short Sleeve Thermal Base Layer Cold Thermal short sleeve top with super soft brushed internal fibres on the inside face of the fabric is designed to keep your body warm when exercising in colder conditions. The 4 way stretch fabric gives you a responsive fit and freedom of movement. Moisture-wicking fabric transports sweat away from the body during high intensity performance. The compression fit improves blood circulation and oxygen delivery to the muscles increasing your endurance. A-seams seams provide comfort and 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.