The Manna™ 17 oz. Signal Tumbler is designed to keep your drinks cold for 12 hours and hot for 6 hours with its double wall stainless steel construction and vacuum insulated seal. This tumbler has a natural cork base to protect surfaces and a translucent press-on lid with sliding closure to help retain the temperature of your drink. It has an elegant metallic painted surface, fits in most car cup holders and is FDA compliant and BPA Free. Gift this tumbler to your coffee or tea lover friends and associates.