Stanley Varsity IceFlow 30 oz Flip Straw Tumbler The Stanley Varsity IceFlow 30 oz Flip Straw Tumbler is a bold and colorful hydration companion that combines style with functionality. This tumbler is perfect for car commutes or workouts at home, with its built-in flip straw for effortless sipping. Its double-wall vacuum insulation ensures that your drink remains leakproof and refreshingly cold for hours. Designed to fit comfortably in your vehicle's cup holder, as well as on treadmills and spin cycles, it also features a folding handle for quick and easy grabbing on the go. By using recycled plastics sourced from discarded fishing nets, the Stanley Varsity IceFlow 30 oz Flip Straw Tumble promotes a sustainable lifestyle and helps reduce plastic waste in our waters.