Our new, neoprene-free Yulex® wetsuits are made of 85% natural rubber/15% synthetic rubber by polymer content. Replacing a petroleum-based material with a plant-based one, they offer the same warmth and performance attributes as conventional stretch neoprene while reducing CO2 emissions by up to 80% in the manufacturing process. Derived from sources which are Forest Stewardship Council® certified by the Rainforest Alliance, we blend the natural rubber with chlorine-free synthetic rubber to increase ozone and UV resistance and meet our rigorous standards for strength, stretch and durability. With an anatomical, performance-focused design that maximizes comfort and flexibility while minimizing weight, the R1® Lite Yulex Front-Zip S/S Full Suit is 2mm in the torso and thighs, lined with high-stretch, faster-drying 55% recycled polyester/40% polyester/5% spandex inverted microgrid; 2mm in the arms and legs, lined with high-stretch and faster-drying 100% recycled polyester; the face fabric is 85% recycled polyester/15% spandex. The floating front-zip features a corrosion-proof zipper and asymmetrical flap for better seal, stretch and range of motion through the chest and shoulders; unlike other designs, the Salmi® zipper is fully replaceable to extend the suit's lifespan. Supratex kneepads and ankle cuffs provide excellent abrasion resistance and increased durability. 100% external seam sealing; all seams are triple glued, blindstitched and internally taped. Easy-access key loop included. Suggested water temperatures: 64-73℉/18-23℃.