The Women's Patagonia Yulex Regulator Lite Spring Jane Wetsuit is formfitting and built with a flexible blend of 85% Yulex natural rubber and 15% chlorine-free synthetic rubber by polymer content, with the natural rubber certified by Preferred by Nature. It features stretchy, solution-dyed linings composed of an interior made from 100% recycled nylon and an exterior of 83% recycled nylon and 17% spandex. The linings are laminated with water-based, solvent-free AquaA glue, offering comfort, durability, and reduced environmental impact for warm-water performance.