The Lucky's Tumbler's lid system and double-wall insulation make this custom tumbler suitable for hot or cold liquids. With the silicone straw and flip up drink-through opening, you can sip your drinks however you like. Wavy textured silicone grip provides both pizazz and a good non-slip hold. The tumbler holds 18 ounces and is made of BPA-free ABS plastic. Enjoy your hot or iced Lucky's late with this tumbler!