Materials : 88% Recycled Polyester 12% Spandex. Starboards’ Original Boardshorts have approximately 12 recycled plastic bottles going into each pair. Design starts with high performance 4-way stretch fabric made from recycled PET plastic bottles. Comfort is maximized to give less irritation on your skin through the construction of the shorts having minimal seams. The perfect combination of performance and comfort. Served up with a performance zip pocket, stretch and flex material, and a water repelling coating these shorts are your go to!