A retaining member and a vacuum-insulated vessel are disclosed. The retaining member includes a frustoconical body, a cylindrical skirt extending from the frustoconical body, and a deformable member extending along an inner surface of the frustoconical body. The deformable member may have multiple layers. An opening extends through the frustonical body, so that the neck of a bottle may pass therethrough. The vacuum-insulated vessel includes the aforementioned retaining member and a double-walled structure, and is able to receive and secure bottles having different heights and widths. The vacuum-insulated vessel also eliminates condensation from external surfaces of a bottle positioned therein, maintains the initial temperature of the bottle, and allows a user to pour from the bottle without having to remove the bottle from the vessel.