The Cando inflatable balance stone is a versatile addition to a therapy or play regime. Can be used to practice and reinforce coordination, proprioception, and balance. Stones can be filled with water or sand to weight them for added safety and stability. Stones can be sued with the curved side down as a vestibular balance board. Top of stone is nubby for tactile beedback and stimulation. Available in a set of 6 - each stone is 7" in diameter