The main material is 200-denier Spectra X-Grid, which offers excellent water resistance and tear strength. It can be attached to the top of a backpack using the central daisy chain and side loops. [Color] Olive [Capacity] Approximately 8L [Weight] 100g [Size] W28cm x D18cm x H15cm [Material] Spectra X-Grid Nylon 200D (PU coating)