The b.box sippy cup is an award-winning product that features a unique weighted straw that moves with the liquid, no matter how the cup is tilted. This makes it easy for babies and toddlers to drink from any angle, even when they are lying down. The sippy cup also has a two-way valve that prevents leaks, even with warm water. The cup is made from BPA-free materials and is dishwasher safe. It is available in a variety of colors and has a premium matte finish.