This delightful toy from Gnawsome™ features music & twinkling LED lights that activate when a button is pushed. The ball features a unique, gum-massaging spikey texture and is made of food grade, BPA-free TPR material. Plays a dog-themed woof version of 'Jingle Bells' for appoximately 25 seconds after activated. Makes a great holiday gift! 3.5" diameter. For small to medium dogs.