Brighten up your three year old?ÇÖs birthday party with the I'm 3 Years Old Today Flashing Button from Beistle. This fun and festive button will make your little one feel special on their big day. The button measures 2.5?ǥ and comes in a package of one. It is ideal for costume accessories, flashing buttons and other decorations. It is also part of our Birthday-AgeSpecific line of party decorations and supplies. The I'm 3 Years Old Today Flashing Button is easy to use and will add a fun and colorful touch to your celebration. And with our Pennsylvania warehouse shipping within one business day, you can be sure that your order will arrive on time. Make your child's day extra special with the I'm 3 Years Old Today Flashing Button from Beistle.