Xeroform® Occlusive Xeroform Petrolatum Impregnated Dressing, 4 x 4 inch, 1 Box of 25 Exercise Mats Shipping Carton Size: 16 L Underpads 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 fungicidal and virucidal properties 4 x 4 inches Nonadhesive but clings and conforms to all body contours