The GSI Outdoors Glacier Stainless Microlite 500 Water Bottle looks at home in your car or at the campsite. This incredibly lightweight, vacuum-insulated bottle keeps coffee hot and iced tea cold for over eight hours. This insulation system is thinner than the competition's, and its stainless steel exterior envelops it for durability and a purer drink. The push-button cap keeps liquid in when you're driving down bumpy dirt roads.