You"ll flip over our Mighty Grip cup. Your toddler will grasp the contoured shape advantage immediately. Flip the lever up to put the straw in perfect sipping position and to close it securely. Whatever position the straw is in, you"ll never see a leak or have to wipe up a mess. This cup is a mighty big idea that"s making kids and moms flip. Holds 10 oz. of liquid Put it in the top rack of the dishwasher Replacement straws sold separately Ideal for kids 12+ months