This Free Flow waterbed mattress is manufactured by United States Water Mattress and it will fit into old school California King 72″w x 84″L x 9″ hardside waterbed frame. The mattress also includes a Fill Kit with 4 oz Premium Conditioner .This free flow mattress is designed with your comfort in mind. It has a lot of movement just like the original waterbed mattresses. Nice heavy 100% virgin vinyl with reinforced corners for a long life. Additional info: Reinforced corners provides durability and the corners helps keep the sheets in place. Heavy duty dark gray vinyl. Best quality available. 100% made in the U.S. Size- 84″long x 72″wide x 9″ deep. Over-cut vinyl to release pressure on the seams. L Corner construction. Seam on the bottom of the mattress is recessed 2 inches for less stress Dura Heat bottom for heat transfer. Lifetime Limited Warranty Made in the U.S.A. United States Water Mattress has been manufacturing quality waterbeds and bedding products for over 4 decades. Fill Kit includes Premium Conditioner which is your preventive maintenance against algae and bacteria build up. You will notice less gassy air build up in your mattress when you use our conditioner. Mattress includes mattress, fill kit and 4oz conditioner. Thank you for looking at Mattress Covers Amazon Store