Backpack made from DSM's Dyneema Composite Fabric (formerly Cuben Fiber). The film-like Dyneema Composite Fabric which is made by laminating Dyneema fibers with UV resin is used in high-performance sails for racing boats etc. It is ultra-lightweight has high waterproofness and tear strength. This backpack prioritizes lightness and if force is concentrated on one point it may be damaged such as getting holes. You can take out the items from the zipper on the side of the front pocket. Product Features Capacity 25-32L POLYETHYLENE 100％ (Dyneema）partly POLYESTER 100% 260g And Wander Dyneema Backpack Green