O'Neill WetSuit s Women's D'Lux 3Q-Zip 4/3 mm Fluid Seam Weld Full Suit urethane 4/3mm 100% UltraFlex Neoprene for Ultimate fit, function, and flexability Exterior Fluid Seam Weld Construction to lock out water from coming inside the suit Strategic Seamless Paddle Zone UltraFlex Firewall Interior Chest and Lumbar Code Red Urethane Coated Back Zip to keep water out