The Nike Pro Core Mock Neck T-Shirt is a baselayer top with long sleeves and a mock neck collar for extra warmth as another layer. The tight fit compression construction optimizes proprioceptive awareness through a locked in tight fit and precision feel, with stay cool properties to help keep you cool during competition to let you stay in peak performance mode for longer. > Please note: The style you receive may vary from the image shown. > Men\\\'s baselayer top > Long sleeves > Mock neck > Compression fit > Stay cool technology > 92% polyester 8% elastane > Machine washable at 30 degrees