The O'Neill Mutant 5/4 is the premier coldwater wetsuit, designed for maximum comfort and warmth in the harshest conditions. It is made with O'Neill's best, stretchiest neoprene and utilizes an easy-entry zipperless closure system.

The Mutant features Firewall insulation in the chest and back panels, and super-stretchy, waterproof Fluid Seam Weld seams throughout the entire suit. It includes a detachable hood for ultimate versatility in a frigid water suit!