Aqua Lung MK2 One Piece UndergarmentAqua Lung's MK2 One Piece undergarment has removable sleeves, and can be combined with additional layers of MK0, MK1, or MK2 undergarment for colder conditions. 2 zippered vertical chest pockets. 2 large fleece lined hand warming pockets. Thumb loops. Non corroding YKK zippers throughout. 2 way zippered rear convenience panel. 2 way torso convenience zipper. 1mm Lycra neoprene 2 way stretch expansion panels at waist and above knees for optimal