• Fluid Seam Weld x2 Full Suit

• 100% Ultraflex XDS Neoprene

• Zen Zip Closure System

• Firewall X Type Interior Chest - Lumbar

• Strategic Seamless Paddle Zone

OK, here's the bottom line on the O'Neill PSYCHO 2.... PHENOMENAL WETSUIT! If you are looking for the best of the best, look no further. The Psycho 2 has a list of features that will keep you warmer, drier, and lighter in the water. Built from 100% of the lightest, most flexible neoprene available, this wetsuit will conform to your every movement. With a high-end suit like this, you can get away with a 4/3 thickness when you usually need a 5/4/3mm because of the semi-dry nature of the seals.The short back zipper resists flushing with the help of an exterior drain and a pullover neck seal. The collar, wrist, and legs cuffs are flush resistant, and the seams are sealed and double taped (taped inside and outside). The internal poly fleece lining helps to wick moisture from your body. All of this boils down to you being drier and warmer in the water. Other noteworthy features include a minimal seam design to reduce chafing and water entry points while increasing flexibility, an external key pocket, and very flexible kneepads.