O'Neill Men's Reactor II 3/2mm Back Zip Full Wetsuit. Size LS Backzip System Provides Easy Entry And Exit With A Water Resistant Closure. Krypto Knee Padz Ultra Stretch Neoprene: Incredibly Soft Premium Material Has Superior Feel, Flexibility, And Elevates Performance Seamless Paddle Zones's Flexible Design Utilizes Minimal Seam Placement For Comfort And Maximum Mobility Wind-Resistant Smoothskin Provides Extra Insulation And Protection Against The Cold.