A stretchy, neoprene-free 1.5mm vest built from 85% Yulex® natural rubber/15% synthetic rubber by polymer content; the natural rubber is from sources that are Forest Stewardship Council® certified by Preferred by Nature™. Best for water temperatures 65°–75° F/18°–23° C. Made in a Fair Trade Certified™ factory. The Women's Yulex® Regulator® Lite Vest is fully backed by our Ironclad Guarantee and you can find it on Patagonia.com. | Patagonia Women's Yulex® Regulator® Lite Wetsuit Vest in Black, Size 8