Set yourself up for a great night s sleep with the Mainstays 5 White Jacquard Smart Box Spring. Offers the look and functionality of a traditional box spring but made from steel providing ultra-sturdy support for any innerspring memory foam or combination mattress features a 100% polyester jacquard covering that prevents shifting. This innovative box spring is designed to easily fold up for convenient storage and transport when not in use. The Mainstays 5 White Jacquard Smart Box Spring sets up in seconds with no tools required and is available in Twin Twin XL Full Queen King and California King.