Toddlers and messes go hand in hand, but you can eliminate at least one kind of leak with Munchkin's Click Lock™ insulated straw cups, which come with a 100% spill-proof guarantee! Featuring beloved Sesame Street characters like Elmo and Cookie Monster, these innovative toddler cups feature a simple locking lid that closes to create a leak-proof seal. You can see, hear and feel the cup lock in place, so you have triple assurance against dribbles and drips. This cup won't even leak if the straw is in the open position! Munchkin even backs this no-leak promise with a 100% replacement guarantee. Secured, and rest assured - this might just be the sippy cup of your dreams.