Designed and produced in collaboration with Dekka, a brand born in Windansea, California and founded by professional big-wave surfer Derek Dunfee. The 310 is constructed using over 60 years of knowledge of making the world's best boardshorts. This short-length classic boardshort is built for pure function and utility. Two layers of ultra-tough, water-repellent, quick-drying SurfNyl®. Constructed with double and triple-needle reinforced seams throughout. Made in the USA and backed with a lifetime guarantee. Features: Signature Birdwell wax pocket. Button fly. Nickel-plated grommets. Birdie woven label. Fit: Short length. We recommend going up 1 size from your normal pant size. Unlike cotton, SurfNyl® has no stretch. Here is a link to the 310 Size Chart. Fabric: Shell & Lining - 100% SurfNyl®. Milled and dyed in the USA. Construction: Double & triple needle reinforced seams. Sewn in the USA. Care: Machine wash separately on cold, gentle cycle. Do not bleach. Hang dry only.