These pouches are super popular, and rightfully so. Having served the Bundeswehr for almost 50 years, this style of pouch held 2 20 Round magazines for the infamous H&K G3 Rifle each. Each soldier was issued two of these pouches for a total of four mags.
Early on, these were made from a rubberized canvas material that is really strong and water resistant. In the 1980s, they introduced a new all-vinyl construction which was very water resistant and opened more quickly, allowing fast access to ammo.
If you have a G3, CETME, AR10, FAL, or M1A, these pouches will work with those 20 round magazines. Built tough, AND collectible, you can't afford to pass these up. Priced right, these are almost a no-brainer.
NOTE: Assume these are all used, and will have normal wear from extensive use in the field. That being said, most of these are in good to very good condition. I will attempt to match the shade of the pouches so you get a matching color set as the shades of OD vary slightly. No guarantees as I'm not sure if there are an even number of each.