Warm, comfortable and durable, these wetsuit booties are made from stretchy 3mm 85% Yulex® natural rubber/15% synthetic rubber by polymer content, with an internal split-toe design for increased control and grip. Best for water temperatures: 48°–55° F/9°–13° C. Made in a Fair Trade Certified™ factory. The R3® Yulex® Regulator® Split Toe Booties is fully backed by our Ironclad Guarantee and you can find it on Patagonia.com. | Patagonia R3® Yulex® Regulator® Split Toe Wetsuit Booties in Black, Size 10