Simply shake the hand clappers back and front, and you will make a plastic clapping sound. Made of new Eco-friendly materials. Your customer will love to make some noise and show support of a brand they love. Just give these away at a party or other fun event. They're made of three pieces of acrylonitrile butadiene styrene and sound off by banging together. Custom color and logo are available. 7 1/2" L x 3 3/4" W