A container has a head piece (7). The container can be or is filled with a medium and is produced of plastic materials using a blow molding, filling, and sealing method. A transition region (13) is between the container (1) and a first type of a head surface (11) arranged on the head piece (7) at an end face, can be penetrated by a piercing or cutting part and extends with a specifiable curvature. A second type of a head surface (41) has a specifiable curvature, which is the same as the curvature of the head surface (39) of the first type, but preferably is different from it and is present on the head piece (7). The head surfaces transition into each other such that a whole surface is formed, which whole surface spans the free end of the transition region (13) directed away from the container (1). The head piece (7) is an integral component of the container (1).

A container may comprise a tubular body having a rounded sidewall extending between a closed end defining a base portion and an opposite open end surrounded by a rim portion, and one or more sets of grooves defined within the vertical portion of the rounded sidewall. The base portion is configured to support the container in an upright orientation relative to a support surface and wherein the base portion defines a support ring having an at least substantially rounded perimeter. The rounded sidewall comprises a curved base transition region and a vertical portion extending between the perimeter of the base portion and the rim portion along a central axis. Each of the grooves comprises a length and a width, wherein the length is longer than the width. The grooves extend between the base portion and the rim portion along the length.

A container may comprise a tubular body having a rounded sidewall extending between a closed end defining a base portion and an opposite open end surrounded by a rim portion, and one or more sets of grooves defined within the vertical portion of the rounded sidewall. The base portion is configured to support the container in an upright orientation relative to a support surface and wherein the base portion defines a support ring having an at least substantially rounded perimeter. The rounded sidewall comprises a curved base transition region and a vertical portion extending between the perimeter of the base portion and the rim portion along a central axis. Each of the grooves comprises a length and a width, wherein the length is longer than the width. The grooves extend between the base portion and the rim portion along the length.

A double-walled container includes a top opening, and a bottom opening, opposite the top opening. A removable top cap engages with threads at the top opening and a removable bottom cap engages with threads at the bottom opening. The double-walled container includes an outer wall and an inner wall. A channel formed on and encircling the outer wall includes a vacuum port through which air between the outer and inner walls is drawn out to form an insulating space between the inner and outer walls. A band is positioned within the channel to cover the vacuum port.

A double-walled container includes a top opening, and a bottom opening, opposite the top opening. A removable top cap engages with threads at the top opening and a removable bottom cap engages with threads at the bottom opening. The double-walled container includes an outer wall and an inner wall. A channel formed on and encircling the outer wall includes a vacuum port through which air between the outer and inner walls is drawn out to form an insulating space between the inner and outer walls. A band is positioned within the channel to cover the vacuum port.

Disclosed is a dual container device comprising a bottom container comprising a first base, a top member comprising one or more first openings, and a first wall extending between the first base and the top member, a top container comprising a second base comprising one or more second openings, and a second wall extending from the second base, an intermediate wall extending either upwardly from the upper rim of the first wall or downwardly from the lower rim of the second wall, the intermediate wall for slidably receiving the container that is not attached thereto therethrough, and guides and tracks disposed on the interior surface of the intermediate wall and the exterior surface of the wall of the container received within the intermediate wall such that motion of the top container with respect to the bottom container is restricted to between an open position and a closed position.

Disclosed is a dual container device comprising a bottom container comprising a first base, a top member comprising one or more first openings, and a first wall extending between the first base and the top member, a top container comprising a second base comprising one or more second openings, and a second wall extending from the second base, an intermediate wall extending either upwardly from the upper rim of the first wall or downwardly from the lower rim of the second wall, the intermediate wall for slidably receiving the container that is not attached thereto therethrough, and guides and tracks disposed on the interior surface of the intermediate wall and the exterior surface of the wall of the container received within the intermediate wall such that motion of the top container with respect to the bottom container is restricted to between an open position and a closed position.

A container may comprise a tubular body having a rounded sidewall extending between a closed end defining a base portion and an opposite open end surrounded by a rim portion, and one or more sets of grooves defined within the vertical portion of the rounded sidewall. The base portion is configured to support the container in an upright orientation relative to a support surface and wherein the base portion defines a support ring having an at least substantially rounded perimeter. The rounded sidewall comprises a curved base transition region and a vertical portion extending between the perimeter of the base portion and the rim portion along a central axis. Each of the grooves comprises a length and a width, wherein the length is longer than the width. The grooves extend between the base portion and the rim portion along the length.

A container may comprise a tubular body having a rounded sidewall extending between a closed end defining a base portion and an opposite open end surrounded by a rim portion, and one or more sets of grooves defined within the vertical portion of the rounded sidewall. The base portion is configured to support the container in an upright orientation relative to a support surface and wherein the base portion defines a support ring having an at least substantially rounded perimeter. The rounded sidewall comprises a curved base transition region and a vertical portion extending between the perimeter of the base portion and the rim portion along a central axis. Each of the grooves comprises a length and a width, wherein the length is longer than the width. The grooves extend between the base portion and the rim portion along the length.

Disclosed are bottles for automatically creating custom blends of spirits. Embodiments of the disclosed automatic infinity bottles siphon or transfer a portion of their contents from a blending container, and move them to a sampling container from which a blended spirit can be decanted and consumed. The two containers are connected by a siphon tube or other suitable means. The blending container includes a selectively closeable opening for adding or removing liquids, and is configured to store a certain volume of spirits. When such volume is exceeded, the excess spirit will move into the sampling container, where the excess spirit is added to an existing custom blend. Custom blends of sprits are thereby created in the sampling container and can be poured from a selectively closeable opening in the sampling container.