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? polyester fabric for long wear *Non-latex cuffs are for those who are sensitive to rubber latex *Each