This is the 3mm Akona Mens Full Quantum Stretch Super Stretch Wetsuit Features: Environmentally Friendly Neoprene Rubber Design Non-Petroleum-Based Neoprene Limestone Over 99.7% Calcium Base Neoprene Upgraded in Every Sense: Material, Design, Fit, Fashion & Comfort 25% More Stretch than Previous Version Unique Lamination Process Nylon-2 Material Extraordinary Flexibility and Stretch Capabilities Nylon Weave Capable of Withstanding HarshElements of Diving Most Comfortable & Best Fitting Wetsuits In-Their-Class #10 YKK Marine-Grade Brass Zipper Slider Full Length Delrin Back Zipper Zipper Pull Leash for Easy Self-Donning/Doffing Zipper Dam: Skin-Out" for Added Seal and Reduced Water Flushing Durable Reinforced Laminated Knee Pads All Seams Glued and Blind Stitched for Strength & Durability Textured Shoulders: More Secure Fit of BCD, Prevent Piling of Shoulder Surfaces Available in Multiple Sizes The Akona Quantum Stretch 3mm Nylon-2 Jumpsuit has textured shoulders for added strength and protection from BCD wear and helps keep the BCD more firmly in place when diving. The suits seams are all glued and blind stitched for warmth while diving and durability. Rear durable YKK #10 brass zipper with pull tab leash allow easy self-donning and doffing. The suits knees are reinforced with a laminated knee pads to protect this high wear area. Suit is available in multiple sizes and is black in color. "