To obtain a package having a lid material of simple structure, and configured to hold the lid material at a position not obstructing the pulling out of the content.

The package 1 includes: a bag body 10 for storing the content therein and formed with an opening 13 for pulling out the content; and the lid material 11 openably/closably covering the opening 13, and one end of which is secured to the bag body. The bag body 10 includes a body engagement part 17 configured to engage with the lid material 11 in a state in which the opening 13 is kept open, when the lid material 11 is unsealed.