KONG Holiday SqueakAir Balls combine two dog favorites - a tennis ball and a squeaker - into one fabulous fetch toy that sparks natural instincts. The KONG Tennis non-abrasive material on these 6 balls is softer on teeth than regular tennis ball felt. The squeaker calls dogs to play and keeps them engaged while the dynamic bounce launches pups into fetching fun with a celebration of holiday-colored penguins, snowmen and mittens.