Squish it! Squash it! Mash it! Smash it! The Squeesh Ball always returns to its original shape. The heart squeesh is 2 3/4in. Use it to develop eye-hand coordination, or as a cool-down activity after cardio-respiratory training and games. Partners can toss it back and forth, but not before giving it a little squeeze to understand the lub-dub of the beating heart.