Springwall Comfort Pockets Nipigon Euro Top Mattress In a BoxThe Nipigon euro top mattress, with a medium firm feel, houses a full perimeter pocket coil system, that covers just that, the full perimeter of the mattress. Designed to provide edge support and more sleeping surface. Individually wrapped pocket coils finely contour to your body for comfort. A medium high density bio foam layer adds greater durability, increased support and long lasting comfort. The gel quilt bio foam is infused with gel particles to