These Earth squeeze balls are made of dense but soft foam easy to return to original shape after squeezing or stretching. Great size (2.5 inch) to hold in hand. You are able to exercise all your fingers with this squashy ball. Manufacturered by NOBBEE. Foam squaihy ball helps you release your stress silently and effectively by squeezing the ball. The foam stress balls are loved a lot by children as well as adults. Great addition to party favor bags! Novelty Bank's globe stress balls are really funny and educational balls for brief learning of world geography.