35 cm Cando Inflatable Seating Standing Disc, Black - 10 Each CanDo inflatable vestibular disc mimics the movement and shape of an Inflatable ball when used on any seat. Use it on the floor as a standing disc for balance training, proprioception and strengthening of the lower extremities. Each disc has one nubby side for tactile feedback and stimulation, and one flat side. Disc inflates and deflates with standard pump. Vary the inflation level to change the level of vestibular challenge. Features 35 cm Cando Inflatable Seating Standing Disc 10 Each Specifications Color: Black Dimension: 14 x 2.5 x 14