[NEW ERGONOMIC DESIGN]The mattress for changing sheets can lift the mattress by 4-5 inches, because the bed is inserted between the mattress and box spring, you no need a partner when making the bed, easy and quick to lay ![Sturdy and Durable]Friction-resistant and durable polypropylene mattress , sturdy and durable, the mattress tool holds the mattress in a raised position, reducing the pressure on the lumbar .[Easy to Use]The mattress wedge slides in and secures the mattress in a raised position, eliminating the problem of repeated lifting when making the bed, the bed folder tool allows you to quickly stuff in the sheets and take out[Comfortable Storage]The curved handle allows the to grasp the mattress wedge , allowing you to hold the mattress wedge in natural wrist position, providing greater comfort, strength and energy transfer.size: 38 x 11.8cmMaterial: Plasticcolour: bluePackage Contents:8 x Mattress Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.