Contigo Autoseal Kids Cups, 9-Ounce, Blue/Green,Pack of 2 Patented autoseal lid is 100-percent leak-proof and 100-percent spill-proof; Lid is also one piece, meaning no loose parts Drinking made easy; Press to sip; Release to seal; autoseal automatically seals between sips to ensure no spills Contoured body makes this mug easy to hold for smaller hands Non-skid bottom pad helps keep the mug in place Will hold 9-ounce of your child's favorite beverage;BPA FREE; Made with polypropylene; Phthalate- and PVC-free; Top-rack dishwasher-safe, but hand wash recommended for best results