Designed to keep you hydrated in functional style, the Stanley Ice Flow Flip Straw 2.0 Tumbler is built to last. It's easy to keep on you thanks to the carry handle and the built-in flip straw is ideal for effortless sipping. When the straw is snapped shut, the double-wall vacuum insulation keeps your drink ice cold for hours on end, making it the perfect travel companion. Made in part from recycled plastics, the tumbler is made from 18/8 stainless steel that's BPA-free and dishwasher safe.