7-Zone Pocket Spring Mattress, 120x200 H3 Ergonomic with Comfort Foam, WhiteA reinforced edge support system utilizes high density foam encasement and additional perimeter springs to create a sturdy, supportive edge. This system increases the usable sleeping surface by up to 20%, prevents roll off when sitting or sleeping near the edges, and maintains consistent support across the entire mattress for enhanced durability. Made with OEKO TEX certified materials, all componentsincluding springs, foam layers, and cover fabricsare