Mattress Type: Hybrid Overall Height: 13” Support Layers: Individually wrapped coils with a firm foam support layer, stabilizing foam support, and Sereni Sleep® fire-retardant fiber Comfort Layers: Memory foam layer Edge Support: Foam encasement for improved perimeter consistency that creates a firmer edge Quilt and fabric of mattress subject to change. This is a cosmetic change only and has no effect on the comfort or support of the mattress. Newly handmade mattresses may require a break-in period of up to 60 days. During this period, your mattress will feel slightly firmer than expected. This is normal and your new mattress will reach its proper comfort level with use.