Worn alone or under a wetsuit, this impact suit is made from stretchy 1.5mm 85% Yulex® natural rubber/15% synthetic rubber by polymer content, with flexible 25mm foam panels for increased flotation and body protection in heavy surf. Made in a Fair Trade Certified™ factory. The Men's Yulex® Impact Short John is fully backed by our Ironclad Guarantee and you can find it on Patagonia.com. | Patagonia Men's Yulex® Impact Short John Wetsuit in Black, Medium