Mattress Cover Allergy Relief King size 78 x80 x9 Zippered Jobst for Men Casual 30 40mmHg 5 699 mm Legs Closed Long Sleeve Pink Rosebud 5 699 mm Legs Closed Internal Width 23 5 * White * Please note that a counterweight is available (model 3P7039X ) for the 350# models only which were made sometime before April '04 * There is no counterweight available for the upgraded 400 lb s sleep and allergy relief * All of our covers are laboratory tested and efficient against dust allergens and pet dander Zippered Mattress Cover * King size 78 x80 x9 * Six gauge vinyl * Heavy duty and durable * One cover per package * 100% Waterproof * Fire retardent * 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 * Our allergy relief bedding is designed specifically to prevent dust allergens from becoming airborne * The membrane free tight weave construction prevents dust allergens and pet dander from becoming airborne * No membrane means the most comfortable and cool night