Beck's Classic Underpads, 34" x 36" Reusable, Polyester Rayon, Moderate Absorbency, 1 Each Bedboards The Aneroid Calibrated© V Lok© Inflation 14804 The Aneroid Calibrated© V Lok© Inflation System consists of a non latex bulb Air Flo© control valve Latex or Non Latex bag and Calibrated© V Lok© Cuff *The Calibrated© V Lok© system clearly indicates whether or not the correct size cuff is being used *The center of the bladder is marked for correct application on either the right or left limb *Hook and loop fasteners are used to provide the optimal number of open close cycles *Cuffs conform to the shape of the limb and have no hard stiff edges *Cuffs are made of tightly woven heat set Dacron Can be added to applesauce Beck's reusable underpads have a soft cotton polyester top layer bedding and mattresses