Blackout Zip- Offset zipper teeth greatly reduces water entry. LSD (Lumbar Seamless Design)- We know that even the best surfers spend significant amounts of time sitting on their boards. By using a single large panel in the rear area of the wetsuit, water entry is minimized and stretch is maximized. Strategic Paddle Zones- An ergonomic,seamless undersleeve panel that allows for unrestricted motion and eliminates rashing. Krypto Knee Padz- Abrasion resistant, high stretch neoprene panel with ergonomic shaping designed to extend the life of the wetsuit and protect the knee while punching through waves. External Key Pocket 100% Super Stretch Firewall Insulation- O'Neill's lightweight thermal insulation jersey wicks away moisture and increases warmth. GBS Seams- Double Stitched partially through the surface and triple glued to create a watertight seam. Tape is added to critical areas.