A container body (20) includes an upper opening portion (21) having a container internal sidewall portion (22) and a container side skirt portion (24). A lid (10) includes a lid internal sidewall portion (12) and a lid side skirt portion (14). Two or more ledge portions (15) protruding inward are formed on the lid side skirt portion (14). The container side skirt portion (24) includes a first guide portion (30) for guiding downward the ledge portions (15) when the lid (10) is attached. When the lid is closed, the lid (10) is drawn into the side of the container body (20). Thus, a seal portion formed between the container internal sidewall portion (22) and the lid internal sidewall portion (12) is press-contacted, in the state of which the seal portion secures high sealability. Further, the length of the lid side skirt portion (14) is increased so as to cover the lower end of the container side skirt portion (24) with a lower portion of the lid side skirt portion (14) when the lid is attached or detached, whereby the fingertips can be prevented from being scratched.