It's a cup! It's a bottle! Wait! Its both. Features a glossy, light-catching opalescent finish that's out of this world. Enjoy your favorite cold or hot beverage anytime, anywhere. Double wall, vacuum insulated premium powder coated finish, food grade copper coated insulation, hotter 10x longer than ceramic & glass, keeps cold up to 9 hours and hot up to 3 hours, non slip silicon base, leak proof straw.