The Tug-i-Mals easy-to-grip handles level the playing field for humans, and an internal squeaker thrills four-legged friends with a surprising element of realism. Soft to the touch, but hardcore in the squeaky department.
Small has 3" ball in the middle
Medium has 4" ball in the middle
Large has 5" ball in the middle
XLarge has 6" ball in the middle