The Stanley IceFlow™ Flip Straw Tumblers are designed to keep you hydrated in style. Perfect for commutes or workouts, the bold and colourful tumblers feature a built-in flip straw for convenient and effortless sipping. With double-wall vacuum insulation and a snap closure, your drink will remain leakproof and cold for 12 hours and iced for 48 hours. The tumbler is also compatible with car and bike cup holders, as well as treadmills and spin cycles. Additionally, the folding handle allows for easy transport. To make cleaning a breeze, all parts of this stainless steel water bottle are dishwasher safe.