Content container

A content container comprising:

• an outer container having a first accommodation space defined therein;
• an inner container accommodated within the first accommodation space and having a second accommodation space defined therein;
• a shoulder part disposed on a first end of the outer container where the first accommodation space is defined, the shoulder part having a communication space that is vertically penetrated defined therein to allow the inner container to be inserted;
• and
• a cover part configured to seal or open the communication space,
• wherein a base part protrudes along an inner circumference of the shoulder part, and a mounting part protrudes along an outer circumference of the inner container,
• wherein the inner container includes a downwardly curved part extending downward from an outer end portion of the mounting part,
• wherein the shoulder part includes at least one upwardly curved part extending upward from an inner end portion of the base part, and
• wherein the at least one upwardly curved part includes a plurality of upwardly curved parts spaced apart along an inner circumference of the base part, and at least one opening defined between the plurality of upwardly curved parts.