"From PerfectShaker. It's the World's 1st Superhero Shaker Bottle! Now you can rehydrate and fuel like your favorite hero.What makes a PerfectShaker so 'Perfect'? It delivers smooth & delicious mixes every time. With an extra strong bottle design and a screw-on leak free lid (with no rubber seal), it's guaranteed to be 100% leak-free and BPA-Free. It's easy to clean & dishwasher safe and has UV ExtraLast ink, a stay-open flip cap and an extra wide mouth. It's lightweight and portable, fits in most drink holders and lets you mix, pour & store -- all in the same container! "