Munchkin"s new line of Click LockTM Cups are just right because they just CLICK. These cups feature a simple click-and-lock lid to securely close for a leak proof seal - guaranteed. Parents will see, hear and feel the cup lock, so they have triple assurance against dribbles and drips. Munchkin is so confident these new cups are mess-free, we are backing up the promise with a 100% replacement guarantee. Click LockTM cups are available in an assortment of vibrant colors, fun artwork, licensed characters, and styles including sippy, trainer, straw, flip straw and Big KidTM spout-less. Because sometimes things in life just click! Click Lock leak-proof technology you can see, feel and hear Soft, flexible straw is leak proof in the open and closed position Contoured design makes cup easy to hold Top rack dishwasher safe, BPA free