With its 360176 castors and patent pending centre hinge the practical revolution folding bed frame with pocket sprung mattress is easy to transport and folds up 30 narrower than traditional folding beds it features a j tex174 sprung base system which offers ultimate comfort support and durability the supplied full length pocket sprung mattress contains over 400 individual pocket springs topped with soft fillings which offer exceptional comfortdimensionsopen w 77cm x l 200cm x h 46c