Water container storage collar

A water container storage collar, comprising:

• a storage part (100) having a hollow shape therein;
• and
• a couple of zipper lines (120), each zipper line having different length on both left and right sides along an outer surface of the storage part (100), wherein a water container (10) is inserted into the storage part,
• wherein the storage part (100) comprises:
• an upper heat insulating material (111) and a lower heat insulating material (112) disposed inside the storage part (100), wherein each of the upper and lower heat insulating materials has a semicircular arc cross-sectional shape with an opening (113), and wherein the upper and lower heat insulating materials have different diameters so that an end of a small-diameter opening is located inside a large-diameter opening;
• and
• a couple of elastic bodies (114), each elastic body formed on upper and lower surfaces of the inner surface of the storage part (100), wherein each elastic body (114) connects the upper and lower heat insulating materials to the storage part (100),
• wherein the upper heat insulating material (111) and the lower heat insulating material (112) are coupled to contact each other through the elastic bodies (114) in response to the water container (10) inserted into the storage part (100),
• wherein the water container storage collar is configured to be formed at an end of s neck of a top of a user, and wherein a front portion of the water container storage collar is formed along a neck circumference in an open circular arc shape.