Originally designed for hotels, the patented Create A King allows you to quickly and safely combine your two twin beds into one large bed the width of a king. It consists of a soft, luxurious 8" wide poly sheepskin that pads the middle area where the beds meet and a 2" adjustable safety strap that wraps around the sides of the mattress, and, with the snap of the buckle, secures the beds together for temporary or permanent use. The safety strap is thread through a choice of 3 loop to ensure it will fit any length twin mattress. Unlike foam, it can be rolled up and stored in its compact bag for future use. Washable, non allergenic and best of all, made in the USA, this product has 5 year replacement warranty against defects.