Recycled polyester fabric treated with a hydrophobic coating. Durable on the outside and soft on the inside. Surfsilk is a durable fabric technology that gives you the best of both worlds. Regular fit, outer seams. Non-corrosive zipper fly with button closure. Side pockets, left back pocket with button closure, right back pocket with water resistant self-locking zipper. Additional details: Iconic Mountain & Wave logo, side pocket with key loop, recycled yarn.