The And Wander Dyneema Backpack uses DSM Dyneema composite fabric (Cuben fiber). Dyneema composite fabric in which Dyneema fibers are laminated with UV resin is used for high-performance sails for racing boats. Super lightweight material with high waterproofness and tear strength. Accessible inside with a zipper next to the front pocket and take out your luggage. Actual measured capacity 25-32L. Charcoal 100% Polyester 25-32L And Wander Dyneema Backpack Charcoal