With a foam border encapsulating 800 springs this mattress provides a 100 sleep surface with edge to edge support the pocket spring design offers exact support and evenly distributes weight helping to reduce stress on your joints the blu cool memory foam layer not only helps to support every contour of your body but also works to disperse body heat keeping the mattress surface cool and fresh this mattress has a soft touch fabric covering with bug guard giving you a gentle and hygienic be