Can be folded into a very small-sized object, and placed in waist bag, chest bag, backpack, almost anywhere.<Br /> <br />features:<br />light compact collapsible soft bottle for easy use, storage and convenient to carry.<Br />soft bite valve, higher flow rate, wide mouth, easy drinking.<Br />constructed with anti-microbial tpu (thermoplastic polyurethane) for superior durability and flexibility.<Br />reusable, bpa-free, pvc-free.<Br />wide mouth design, convenient to fill with water.<Br />suitable for running, walking, cycling, mountaineering and other outdoor sports.<Br /> <br />specification:<br />material: tpu<br />color: blue / dark green(optional)<br />capacity: 500ml / 250ml(optional)<br />water temperature: 0-40°<br />size: 255* 95mm / 10 * 3.7In, 240 * 75mm / 9.4 * 2.9In<br />package size: 32 * 10.5 * 2Cm / 12.5 * 4.1 * 0.7In<br />package weight: 38g / 1.3Oz, 32g / 1.1Oz <br /> <br />package list:<br />1 * water bottle