Thanks to its double wall vacuum insulated design, this portable insulated water bottle combines form and function to provide a convenient drinking option for both winter and summer. Drinks can be kept hot or cold for eight hours. The stainless steel straw-cap water bottle guarantees a tight seal and prevents leaks. The twist-on cap on each thermal bottle is easy to open and entirely leak-proof. This bottle won't get warm or sweaty no matter how hot or cold the beverage is. Small opening and tight top on the sports bottle make it simple to spill-free store in your car seat or camping gear. You may use this well-liked heat bottle everywhere, including at home, the gym, when travelling, and in a vehicle.