This is a BLACKHAWK Pouch known as the 3700 Series Pouches, model 37CL116BK.
This removable medical pouch disconnects quickly from platform. It mounts to any S.T.R.I.K.E.(R) or PALS/MOLLE platform by weaving the integral straps on the back of the pouch in and out of the platform webbing.
Features:
Side-release buckle for additional security
Red handle and zipper pulls for medical content identification
Internal pocket and elastic straps for stowing critical supplies
Can be configured for belt wear
