This spring suit is crafted from 85% Yulex natural rubber and 15% synthetic rubber, without any neoprene. The natural rubber used in this suit is sourced from suppliers certified by the Forest Stewardship Council and accredited by Preferred by Nature. It's designed for optimal performance in water temperatures ranging from 65°75° F (18°23° C). Made in a Fair Trade Certified factory. Stretchy 85% Yulex natural rubber/15% chlorine-free synthetic rubber by polymer content; the natural rubber is from sources that are Forest Stewardship Council certified by the Rainforest Alliance Stretchy, solution-dyed linings; interior is 100% recycled nylon, exterior is 83% recycled nylon/17% spandex Linings laminated with water-based, solvent-free AquaA glue Floating, asymmetrical front-zip with a noncorroding Riri zipper provides a better seal and extends the suits lifespan; zipper can be repaired or replaced All seams are triple-glued and blindstitched; internally spot-taped at high-stress areas E