A stackable package for bedding includes a flexible outer container having an upper end and a lower end, a bottom panel extending along the lower end of the flexible container and side panels extending upwardly from the bottom panel toward the upper end of the flexible container for defining an open end of the flexible outer container. The stackable package includes an insert disposed inside the flexible outer container for reinforcing the bottom and side panels of the flexible outer container, and bedding disposed inside the insert. The side panels of the flexible outer container have upper ends that are joined together for sealing the bedding inside the flexible outer container. At least one of the panels has at least one vent opening formed therein for allowing air to circulate through the package after the package has been sealed.