Patagonia\'s neoprene-free Yulex® wetsuits, now made in a Fair Trade-Certified™ factory, are 85 % natural rubber and 15 % synthetic rubber. They replace a petroleum-based material with a vegetable-based material and offer the same warmth and performance characteristics as conventional stretch neoprene. At the same time, they reduce CO2 emissions in the manufacturing process by up to 80 %. Manufactured from materials certified by the Rainforest Alliance Forest Stewardship Council®, Patagonia mixes natural rubber with chlorine-free synthetic rubber to enhance ozone and UV resistance and to meet its stringent strength, elongation and durability requirements. FeaturesElastic material with a polymer content of 85 % Yulex™ natural rubber and 15 % chlorine-free synthetic rubberThe natural rubber has an FSC® certificate from the Rainforest Alliance.Torso and thighs with spun-dyed microgrid thermal lining made from 95 % polyester (51 % recycled) and 5 % recycled elastane that dries quickly and is super warm and suppleElastic, spun-dyed lining in sleeves and legs with solvent-free AquaA™ adhesiveAll seams sealed from the outside to maximize tightness and durability Triple taped blind seams throughout, additionally taped with a comfortable thin tape from the insideFull opening zipper front for faster and more comfortable entryAsymmetrical front flap with replaceable, stainless steel Salmi®zipper for tight closure and longer suit lifeEasily accessible lanyard insideRobust, supple Supratex knee pads and cuffs that fit snugly without constricting or restricting movementFair Trade™-certified clothingSuitable for suggested water temperatures of 16°C-18°CWeight 625 g