The Stanley Iceflow Flip Straw 30 oz Tumbler will be your new favorite water bottle. Combining bold, fun colors with a functional design, the Stanley Iceflow is the perfect accessory. The flip straw lid is leakproof and the easy-to-carry handle makes it easy to take your Stanley Iceflow on the go. Keep your drinks cold for 12 hours and iced for 2 days. The Stanley Iceflow Flip Straw 30 oz Tumbler is hydration built for life.