Closure systems and insulating devices having closure systems

A container comprising:

• an outer shell;
• an opening extending through the outer shell;
• and
• a closure system adapted to substantially seal the opening, the closure system comprising:
• a first flange engaged with the container, the first flange having a first end, a second end and a first engagement mechanism disposed between the first end and the second end;
• a second flange engaged with the container, the second flange having a first end, a second end and a second engagement mechanism disposed between the first end and the second end;
• the first engagement mechanism configured to engage the second engagement mechanism, and the closure system having an open position wherein first engagement mechanism is substantially disengaged from the second engagement mechanism and a closed position wherein the first engagement mechanism is substantially engaged with the second engagement mechanism;
• a slider configured to selectively engage the first engagement mechanism and the second mechanism when moved in a first direction and disengage the first engagement mechanism from the second engagement mechanism when moved in a second direction;
• wherein the container is substantially watertight when the closure system is in the closed position;
• wherein each of the first engagement mechanism and the second engagement mechanism include a hollow portion;
• wherein each of the first flange and the second flange include a hollow portion;
• and wherein the hollow portion of the first flange is located outward of the first engagement mechanism and the hollow portion of the second flange is located outward of the second engagement mechanism.

A closure system comprising:

• a first flange having a first end, a second end and a first engagement mechanism disposed between the first end and the second end;
• a second flange having a first end, a second end and a second engagement mechanism disposed between the first end and the second end;
• the first engagement mechanism configured to engage the second engagement mechanism, and the closure system having an open position wherein first engagement mechanism is substantially disengaged from the second engagement mechanism and a closed position wherein the first engagement mechanism is substantially engaged with the second engagement mechanism;
• a slider configured to selectively engage the first engagement mechanism and the second mechanism when moved in a first direction and disengage the first engagement mechanism from the second engagement mechanism when moved in a second direction;
• wherein the closure system is substantially watertight in the closed position up to 7 psi above atmospheric pressure;
• wherein the first engagement mechanism and the second engagement mechanism each comprise a plurality of rails;
• wherein each of the first engagement mechanism and the second engagement mechanism comprise a flexible material;
• and
• wherein each of the first engagement mechanism and the second engagement mechanism include a hollow portion;
• and wherein the hollow portion of each of the first engagement mechanism and the second engagement mechanism is filled with a polymeric foam;
• wherein each of the first flange and the second flange include a hollow portion;
• and wherein the hollow portion of the first flange is located outward of the first engagement mechanism and the hollow portion of the second flange is located outward of the second engagement mechanism.