Can be folded into a very small-sized object, and placed in waist bag, chest bag, bum bag, backpack, almost anywhere.Features:Light compact collapsible soft bottle for easy use, storage and convenient to carry.Soft bite valve, higher flow rate, wide mouth, easy drinking.Constructed with anti-microbial TPU (thermoplastic polyurethane) for superior durability and flexibility.Reusable, BPA-free, PVC-free.Wide mouth design, convenient to fill with water.Suitable for running, walking, cycling, mountaineering and other outdoor sports.Specification:Material: TPUColor: Blue / Dark Green(Optional)Capacity: 500ml / 250ml(Optional)Water Temperature: 0-40°Size: 255 * 95mm / 10 * 3.7in, 240 * 75mm / 9.4 * 2.9inPackage Size: 32 * 10.5 * 2cm / 12.5 * 4.1 * 0.7inPackage Weight: 38g / 1.3oz, 32g / 1.1oz Package List:1 * Water Bottle