By now, most individuals should be well familiar with a dump pouch, or at the very least the concept of the dump pouch. It’s become a nearly ubiquitous piece of kit, and I’d almost say it could probably be found on 9 out of 10 of an Airsofters setup.
For the uninitiated, a dump pouch is a expanding, or non-expanding hollow pouch traditionally used to stow your empty magazines during reloads. In a bit of marketing fluff, these are sometimes also called “Sensitive Site Exploitation Bags” which are basically the same thing as a evidence bag or a gussied up dump pouch, but typically sold at a higher cost (you are paying for the name, after all…).