most effective bed

Introduction: Memory foam was first developed for NASA aircraft seating in the mid-1960s and consists of viscoelastic material. It is an extremely energy insulator as well as soft. The basic form consists of a polymer called polyurethane. This is a…

A mattress is a rectangular, extensive pad to be fitted with a leaning body, to be used as a bed or as part of a bed on a bed frame. Mattresses can consist of a cupboard box, usually heavy fabric,…