Spring system: Features a 13.5 gauge open coil spring system with traditional wadded fillings. Mattress: Comes with a 13.5 open bonnell coil with a thin layer of foam. Depth: 8-inch thick (approx) Divan bed set: Get a Radley divan bed frame and mattress that comes with u-clips and casters. Size: Choose from a small single, single, small double, double, king, or super king size set. Storage options: Choose from zero, two or four drawers. Radley Divan Bed Set | Small | Living Social