Mattress Foundations | Folding Portable Box Spring with Detachable Cover, Slate Gray | Twin XL | Polyester

Meet your new go-to mattress foundation for Twin XL beds! This 8-inch high metal frame is built to last, supporting up to 800 lbs so you can sleep soundly night after night. Whether you’re using it as a standalone floor frame, a box spring for extra height, or a temporary setup for guests, it’s ready in minutes—no tools needed! The best part? It folds in half for easy storage in closets, under beds, or even in a car trunk—perfect for college dorms, small apartments, or weekend getaways. Plus, the detachable slate gray polyester cover adds a clean, modern look while keeping your mattress from slipping and protecting the frame from dust. It’s versatile, durable, and designed to make your life easier—what more could you ask for?