The Tusk is one of the original eight toys and went on to inspire a whole family of similar shapes. It rises in a large bending curve to best accommodate the body but also makes for easy and fun hands-free play. This shape is great when you feel like bouncing up and down on something ... the angle facilitates a good entry while kneeling and pushing back and forth. This angle, along with the ample base, keeps this as one of my preferred for solo play. The cross-section of the shaft is an oval so as to allow for the maximum circumference yet fit comfortably inside. The view here is of the wider side.