Bold and colourful, Stanley IceFlow™ Flip Straw Tumblers are made to keep you hydrated and are ideal for travel or exercise. This tumbler has a built-in flip straw for easy and effortless sipping with double-wall vacuum insulation to keep your drink fully leakproof and cold for 12 hours - iced for 48 hours. It fits comfortably into your car, bike or treadmill cup holder, offering excellent hydration on the go. The folding handle makes transportation a breeze, and as every bit of this stainless steel water bottle is dishwasher safe, it means the IceFlow™ Tumblers are super easy to clean.