The drybag from the Hoja cycling series is designed to fit perfectly into the separately sold Fjällräven Hoja Seat Bag Harness. The bag features a valve that allows you to expel excess air for a more compact pack. Note! Some product images display the aforementioned Harness, but this product is just a dry bag. - Outer material: 210-denier nylon, made from recycled fibers - Waterproof rating: 10,000 mm, with taped seams - Roll-top closure This product does not contain PFAS compounds. *Hoja* is Swedish for cycling for the fun of it. With Hoja apparel and gear, you're not out there to conquer or brave nature, you're out there to soak in beautiful landscapes and twisty roads on two wheels.