The Stanley The Iceflow Flip Straw 2.0 20 oz Tumbler is a stainless steel cup for traveling with your favorite beverage. Designed for cold drinks, the double-wall vacuum-sealed construction keeps them cool until the last sip is finished. The easy-grab handle has plenty of space for your hand so that you can trot between home, car, and office or gym with ease. Flip up the straw, enjoy a cool, clean sip of water, and take on the day.