This is a triple mag shingle pouch from Eagle Industries. The pouch can hold up to three 30 round USGI magazines. Mags are secured with button snap straps. The straps have two buttons for different height mags and elastic to hold them tight. There is MOLLE webbing on the exterior for mounting additional pouches or accessories on top of the pouch. The pouch can be mounted to any MOLLE compatible surface.
This pouch is a V2 because of the lighter material used in construction.