Water Bottles For School 750ML Portable Outdoor Collapsible Sport TPU Soft Water Bottle Folding Kettle Water Bottle Camping Travel Running BottleProduct InformationMaterial: TPUCapacity: 350ml,550ml,750mlFeatures: foldable, narrow mouth, lightweightColor: light blue/dark green/brownProduct net weight: 91g,112g,127gMulti-occasion use:For outdoor sports such as hiking,biking,running,the lightweight & collapsible design allows you to exercise outdoors without having to make room for it in your backpack like regular water bottle needs.It even can be fit in in your Pants pockets. This bottle is all you need to keep you hydrated while on-the-go, portable and the right size for you to hold your drinkable water for the day.Perfect choice for travelers who often catch flights. For commuting students and office workers, you can also take it to the office,or the classroom.Because it has a stylish design, very refreshing colors for you to choose.collapsible water bottle adopts food-grade silicone, which is durable and reusable. It is not only the healthier choice for you and your family, but can also significantly help to protect this beautiful planet.For cleaning:you can add some soda water, or citric acid, and then shake the water repeatedly. You can also rub it. Soak it for one to two minutes to clean it.