... mattress sleep area.4.High density knitting cotton, durable, health and comfortable.5.The whole effect buffer network, dispersion force, firmly ... for long time.6.Continous spring system,bed nets solid and durable, never deformation, to avoid the strong.7.Hard non ... pack.Design for your life RMB-2 High density foam contininous spring baby mattress, high quality and friend mattress,children single size ...