2-mm neoprene with titanium laminate adhesive provides plenty of warmth * LiquidSeam glued seams keep water out vastly increasing the warmth of this glove * The neoprene HydroCuff grips your arm, helping keep water out and warmth inside the glove * The Rawhide neoprene palm gives you awesome gripping ability * Raw neoprene top sheds water, greatly reducing evaporative cooling