Tears disappear when you use this Boo-Bunnie® comfort toy on a little one's boo-boo! A sweet woolie bunnie cradles a plastic cube filled with distilled water. The cloth bunnie provides softness and comfort while gently applying diffused cold to the boo-boo. Simply pop the Boo-Cube in the fridge or freezer until it's needed. Boo-Cubes are 100% bisphenol-free plastic and arrive pre-filled with distilled water. Great for use at home, daycare, Grandma's house, or on-the-go!