Lid

A lid comprising a top lid made of a paper-based material, wherein the top lid includes,

• an opening portion communicating between an inside and an outside of the top lid, and
• a lid piece formed to be capable of opening and/or closing the opening portion, wherein
• a seal member made of a paper-based material is connected to the lid piece, the seal member being configured to open the opening portion by pulling up the lid piece,
• the seal member includes one end part attached to the lid piece, another end part opposed to the one end part, and a knob portion formed at the another end part,
• the lid comprises a holding portion for holding the lid piece in a state where the opening portion is opened, and a holding reception portion configured to hold the holding portion in a state where the opening portion is opened,
• the holding portion is formed in the seal member, and is positioned between the one end part and the knob portion,
• when the other end part is bent, the holding portion protrudes toward a surface of the top lid, and
• before the other end part is bent, the holding portion is substantially on the same plane as a surface of the seal member.