This is a complete bed frame set comprised of two Twin XL bed frames. It is intended to support one standard king mattress.The Knickerbocker emBrace™ is a designer bed frame crafted from the finest materials. Contoured side rails and tapered legs establish the emBrace™ as the vanguard of bedroom fashion. Superior rail steel construction allows the emBrace™ to hold more than 5000 lbs. of weight. Available in black, brown, gray, or white, the emBrace™ will enhance the appearance of your bedroom and provide a stunning platform for your luxury mattress set.