Kong Wubbas offer playful pups all sorts of interactive and chewing fun! Extremely durable, reinforced-stitched nylon fabric covers a squeaker tennis ball on top and a tough rubber ball below. Long, floppy tails make the toy easy to fling, grab, and throw. Small measures 8"L. Top ball is 1 1/4"in diameter, the bottom ball is 1 1/2".