Splash Stopper: Boon’s Snug Sip Universal Bottle Topper fits easily onto both water and juice bottles with different neck sizes for kid-friendly sipping without the mess Spill Proof Water Bottle: Featuring spill proof valves and caps that keep drinks inside the bottle and off of your kids, the Snug Sip is a perfect toddler travel essential Food Safe Silicone: The Snug Sip bottle toppers convert a water bottle into something as easy to use as a soft spout sippy cup, plus they're made with 100% food safe silicone to put parents' minds at ease Great on the Go: These bottle toppers include 4 convenient carrying cases that pop easily into your diaper bag, making them crucial toddler travel essentials for flying or driving Easy Clean: The Boon Snug Sip bottle topper transforms an everyday bottle into a spill proof water bottle, and they're top-rack dishwasher safe for quick and easy clean up