The Hockey Core shirt will give you excellent breathability and fit so that you can play your entire game for as long as possible. For a superior fit, we've used our exclusive bio-shaped design to match the curvature and shape of your natural stance and move with you every step of the way, hanging and missing. Bio-form to suit your natural position The AirFlow eye provides maximum breathing The locking of the sleeve prevents the elbow pads from moving Sleeve grip pattern.