ling stainless steel water bottle kids school toddlers girls boys school bike holder with straw sports captravel flask tumbler (blue ling [keep hot and cold]: adopted unique double wall vacuum insulation technology, this lightweight stainless steel water bottle keeps your drinks hot or cold up to 12 hours. you can fit some ice cubes in the bottle in summer, enjoying the cool and fresh in hot winter. carrying some hot water or coffee, enjoying the warmth. [sturdy and durable]: 100% bpa-free, food grade18/304 stainless steel both outside and inside walls. durable vacuum insulated construction, shatter proof, eco-friendly, non-toxic, rust and leak proof, easy to clean. specially designed cap: vacuum-seal cap of this double walled stainless steel water bottle is to prevent beverage spills. you can turn your bottle in any direction without leak. double wall made it no sweat and easy to handle. [stylish and comfortable]: the bottle design is tall and slim, easy and comfortable to hold and drink. 17oz (500 ml) in cola shape just the right size helps you to keep hydrated outdoors and fits in your bag easily. bottle on the go. [idea companion]:whether you're working up a sweat or working at your desk, you need a water bottle that's going to keep your water cold no matter what. we hate spills as much as you do, especially when they lead to ruined laptops or meeting notes. this leak water bottle also fits a variety of cup holders and pockets nicely such as backpack, bicycle, car and gym bag etc. this sports water bottle is an ideal companion of your outdoor activities.  [100% quality guarantee]: any problems please feel free to contact us and we will give you a satisfied answer! if any problems, just return it, we will replace it or refund your total purchase with no additional cost. totally risk free ! premium double wall insulation technology: this stainless steel water bottles has a powerful double wall insulation technology that will keep your drink at the right temperature until the very last sip. in fact, our reusable water bottle can keep cold drinks cool for 24 hours, and hot drinks warm for