O'Neill Epic 3/2mm Back Zip Full Wetsuit The Epic has many of the same great features as our high-end wetsuits, including 100% UltraFlex Neoprene, double seal neck closure, LSD (lumbar seamless design) and re-engineered covert blackout zip. Clean graphics and sharp style lines make the Epic the best value in the industry. Back Zip Wind-Proof Smoothskin Double Super Seal Collar External Key Pocket with Loop UltraFlex Neoprene FluidFlex Firewall Glued and Blindstitched Seams