This is compatible with MOLLE interface tactical gear (i.e. vests, leg platforms, battle belt, etc.)
Back webbing side is 2.5x4.5" (6.3x11.4cm)

Pouch Can Hold :
2x 14 Round DMAG
1x 20 Round DMAG
Smoke Grenade
40mm Grenade
1x Small Radio
Other Similarly sized items