Foamily Foam Bed Bridge Pad - Transform Two Twin Mattress Beds into a King Size Bed Connect two single mattresses into one double XL bed with Foam Bed Bridge Converter Sleep comfortably by using this hidden gap filler between the crack of your two beds Easy to hide split under sheets but best when used together with mattress topper Instantly bridges the gap between two beds or mattresses. Can be used with a number of beds or sets Soft and supportive premium grade high quality hypo-allergenic foam / Made in the U.S.A