Featuring advanced vacuum insulation technology,40 oz water bottle keeps your drink HOT for up to 12 hours and COLD for up to 24 hours, allowing you to enjoy icy cold drinks after intense workouts or a cup of hot coffee while winter camping.Crafted with food-grade 18/8 stainless steel, this 40 oz thermo mug is durable and rust-free, allowing you to drink without worries. Its powder coating finish ensures a better grip, and its wide-mouth opening makes your ice filling and cleaning easy and fast.A variety of chic classic colors, enabling you to choose the bottle according to your mood while maintaining good hydration.