Mattress Protector Zippered Twin 39 x75 x9 Canes Blind Mans ANALOG (DIAL) READOUT * 100 Select Ear:Right Ear ANALOG (DIAL) READOUT * 100 lb * The heavy duty dynamometer features the hydraulic system that is used in the industry accepted Baseline© and Jamar© hand dynamometers and pinch gauges * Hydraulic system ensures accurate readings * The dynamometer is much lighter (1 press a little more to hear higher frequency sounds * Protects mattress * Heavy 3 gauge plastic * Individually sealed in a poly bag * Treated with flame retardant * Fits both mattresses and boxsprings up to 9 thick * Notice to California Consumers: WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm * ZIPPERED * Twin 39 x 75 x 9 * Excellent retail packaging