Double Wall Vacuum Insulation: The 40 oz tumbler with handleand straw features triple layer, double wall vacuum insulation technology.Enjoy Beverage Cold or Hot. Under normal temperature, it can keep a tumbler of ice for 12-20h until the ice totally Upgraded 2-in-1 Lids & Leak Proof: 40 oz tumbler with Lid and Straw.Convenient for you to drink, sip, or swallow.The lid is double threaded 100% proof lid, makes your travel worry-free, no more worry the lid pops out and spillage. Durable Premium Material＆ BPA Free: Made of 18/8 food grade stainless steel,BPA free, healthier than plastic cup. The insulated tumbler never sweat due to the Vacuum insulated design. Powder coating on the outside fits more comfortably in your hand, Cup Holder Friendly& Comfort Handle: The large water tumbler with integrated handle fit in most cup holder,The sturdy and long-lasting handle offers a comfortable grip.With the handle to use more portable. Larger cups are easier to clean. Tumbler Perfect Choice: This 40 oz tumbler set is designed for everyday use at home, in the office, outdoor parties and events,and it's available in a range of aesthetic colors that are sure to please.