BOLSO ECOALF. Sport Duffel Bag in navy blue. The Sport Duffel Bag is made of 100% Polyester from plastic bottles, transformed into fibers to offer low-impact accessories with the best quality. A durable bag perfect for carrying your belongings when practicing sports. Main fabric: 100% Polyester Lining: 100% Nylon Reverse coil zipper Sealed side pocket with lining Short straps and removable long strap Separate interior pockets Contrast color printed claim Water repellent Vegan.