features double-wall insulation technology that keeps drinks cold for up to 34 hours and hot for up to 12 hours. Thicked screw-in lid, newly upgraded 3-in-1 Slider, silicone ring on the top, ensure the cup is extremely airtight and make the cup leak a thing of the past. INCLUDES: 40oz water tumbler comes with 1x silicone straw, 1x cleaning brush, and 1x straw with silicone tips on both ends - a very humanized design. The silicone tips protect your mouth and the inner wall of the cup. Additionally, the 40oz water tumbler has an ergonomic and comfortable grip, making it easy to carry the tumbler filled with ice water anywhere.
