The materials used in this product are all recyclable, and the materials have passed domestic and international food hygiene and safety testing, non-toxic and safe. Can be folded into a pocket backpack, is lightweight, and easy to carry. Folding water bags compared to another process of manufacturing wateBottlest a low cost, compared to other water bottle processes used in the printing process (heat transfer printing, silkscreen) more no pattern printing limitations, and you can print any complex pattern. Made from pe material, measuring 4.7*8.66 inches, this custom sport portable outdoor water storage bag 16oz. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization available: Print your logo or customize packaging and color schemes. Product Highlights: Eco-friendly material, reusable, foldable for storage.