GOGO 40mm Beer Ping Pong Balls/Decoration Balls, Assorted Colors 150 PCS Polypropylene Size of 40mm in diameter (Approx. 1 1/2"); Price for 150 assorted balls, mixed in 6-8 random colors Non-Professional Ping Pong Balls: Made from Polypropylene, non-flammable, non-plosive, lightweight and a little bit bouncy but NOT as formal tournament balls Bulk of ping pong balls is ideal for all kinds of games such as beer pong, carnival games, water game and so on; colorful balls also nice to decorate your party and all celebrate occasion Perfect for using in classroom or at home as a Teaching Tool and Incentive; blank ball with no logo printed so you may design your unique ball, nice to arts and crafts programs Bring Endless FUN for the Pets: Let your dog, cat or rabbit play in the yard, home and park, bounce and chase the toy ball around the room