Name: Portable folding water bag Material: Material: three-layer composite material PE+PA+PET (BPA free, environmental protection material) Product capacity: 700ml 13X23cm(including cover 13X26cm) Thickness gram weight: thickness 0.20mm gram weight 27g Product Features: A type of innovative soft kettle, collapsible features make the kettle can be flexibility for various space, compared with the traditional rigid kettle, more suitable for hiking as the action of the water container, at ordinary times can be plugins in backpack or waist, finished fold ten percent fit into a pocket or backpack, for a hiker, can more effectively improve space utilization rate, weight can be lighter! Advantage: Reusability. Foldable, easy to clean and washable. Portability. Food grade materials.