Take Five Men's Skin Tight Compression Base Layer Running Shirt, Black, M PERFORMANCE - All-season baselayer that keeps you cool when it's hot, and warm when it's not COMFORT - High quality fabric that provides excellent fit and shape retention Moves moisture away from the body for ultimate comfort PROTECTION - Helps prevent injuries and protects your skin from abrasive surfaces Lightweight, breathable poly/spandex Hydrology compression fabric with stretch