Picture shows 2 organizers and how they can work together. $17.50 is per each. SEE BELOW * A great size for many items, including unitized medications. * Zip organizers can attach to any Conterra bag or pack with rip and stick compatible fabric. * Two organizers can also be attached together (Zip Attach ) to make fold out modules. * Two colors, with reflective stripe that can be written on in permanent marker.