This portable insulated water bottle with double wall vacuum insulated construction gives you both fashion and function, making it a practical beverage alternative for both winter and summer. It can keep drinks hot or cold for up to 8 hours. The straw-cap water bottle made of stainless steel ensures a tight seal and prevents water leaking. Each thermal bottle has a twist-on cap that is simple to open and completely leak-proof. This bottle won't sweat or get hot no matter what the liquid's temperature is. The sports bottle's narrow mouth and sealed lid make it simple to throw in your camping pack or car seat without worrying about spills.