Microfiber LOW CAL KING FOUNDATION: Support your bed with this innovative foundation. Suitable for most California king size beds, its supports your mattress with ease STURDY METAL CONSTRUCTION: Built to last and designed for durability and longevity, this box spring is constructed of sturdy metal instead of wood. It features a removable fabric cover and rounded corners for added safety LOW PROFILE DESIGN: With a low profile design, use this foundation with your bedframe to get the low bed design you crave. Supports all kinds of mattresses - from memory foam to plush DIMENSIONS: Measures 82.75" W x 71.5" D x 5" H. Works with variety of bedframes. Foundation only, mattress sold separately ASSEMBLY REQUIRED: Easy-to-follow instructions, hardware and tools included. Two people recommended. All parts, tools and instructions are packed into one compact box that ships straight to your door