Featuring an exclusively designed silicone sleeve, this stainless steel insulated tumbler allows you to take your favorite beverages on the go and eliminates the need for disposable cups. Its double wall, vacuum insulated construction keeps contents hot or cold and the silicone base prevents sliding. The silicone gasket in the lid helps prevent leaks while the dual-functionality lets you enjoy hot beverages with the sip feature or cold beverages using the included straw in the straw hole. Silicone sleeve provides a non-slip grip. Fits in a standard vehicle cup holder. Straw not intended for use with hot beverages and includes cleaning brush. 28 oz.