Stability Trainer Blue Soft Wheelchairs Lightweight K3 4 Two sided chestpiece with tunable diaphragms Wrist and Hand Two sided chestpiece with tunable diaphragms on both the adult and pediatric sides * Single piece tunable diaphragm is easy to attach and easier to clean because its surface is smooth without crevices * Pediatric side converts to a traditional open bell by replacing the single piece diaphragm with a non chill rim * Next generation tubing provides longer life due to improved resistance to skin oils and alcohol Shipping Carton Size: 9 L x 7 W x 5 H It is air filled to provide multiple direction displacement * One side offers rounded points for sensorimotor stimulation and its heavy gauge side walls resist the tendancy to roll the ankle during exercise Soft Blue * 16 x 9 x 2 Shipping Carton Size: 16 L x 14 W x 4 H *Theraband© Stability Trainer is used to improve motor skills and balance particularly among the elderly and for knee back and ankle rehab * Two foam pads of different densities and one air filled cushion allow users to work through progressive levels by standing on a pad * The green Stability Trainer is firm and provides a beginning level of challenge * The blue Stability Trainer is soft and introduces an increased level of challenge to the user * For maximum challenge use the new extra soft black Stability Trainer