With its 360176 castors and patent pending centre hinge the practical revolution folding bed with airflow mattress is easy to transport and folds up 30 narrower than traditional folding beds it features a j tex174 sprung base system which works together with the supplied full length breathable airflow fibre mattress for ultimate comfort support and durabilitydimensionsopen w 77cm x l 200cm x h 46cmfolded w 77cm x l 101cm x h 26cm