Stability Trainer Black X Soft Heating Units Includes (4) standard hot packst Color:Red Includes (4) standard hot packst * Size: 10 L x 8 W x 15 H * All Whitehall Thermalators feature thermostatically controlled water temperature seamless coved bottom for ease of cleaning lighted front mounted on off switch * Concealed heating element and snap off thermal protector to prevent overheating and hand burns * SpO2 and pulse rate can be shown correctly when pulse filling ratio is 0 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 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