Stanley 1913 The IceFlow Flip Straw 2.0 Tumbler 0.89L / 30ozThe bold and colorful Stanley IceFlow Flip Straw Tumblers are made to keep you hydrated in a fully functional style. Ideal for commutes or workouts, it has a built in flip straw for easy and effortless sipping. The double wall vacuum insulation will keep your drink cold for 12 hours or iced for 48 hours. It fits comfortably in your car or bike cup holder of treadmills and spin cycles, too! The folding handle lets you quickly grab and go. To help keep