Developed and tested to perform in the world’s best waves, these lightweight, slim-fit, high-performance surf trunks are built from 86% recycled polyester/14% spandex fabric with streamlined four-way stretch. The contoured waistband is designed to keep your trunks in place even when the surf’s as heavy as it gets. Outseam is 18. Made in a Fair Trade Certified™ factory. The Men's Hydrolock Stitched Boardshorts - 18" is fully backed by our Ironclad Guarantee and you can find it on Patagonia.com. | Patagonia Men's Hydrolock Stitched Boardshorts - 18" Inseam in Forge Grey, Size 31 - Recycled Polyester/Nylon