A pouch includes a bag body, a zipper, and a closing sheet. The bag body includes an accommodation space that can accommodate contents, a first aperture for opening the accommodation space, and a second aperture formed so as not to face the first aperture, for opening the accommodation space. The zipper is attached to the bag body, and unseals and seals the first aperture. The zipper includes a male part and a female part. The closing sheet is attached to the bag body so as to separate the male part and the female part of the zipper from the accommodation space. The closing sheet includes a weakened part that can be broken when unsealing of the zipper.