?Suitable support to ensure development Spine for your children? contains of Exclusive Medium PU Foam Layer? supported with Bonnel Spring & Foam Encased technology. With 2.4 mm Bonnel Spring? Foam Encased? Soft PU Foam Layer? Knitted Mattress Fabric? Kiln Dried Mahogany Wood Bed Frames? Anti Dust Mite.Mattress Thickness : 28 cmFoundation : 39 cm.