I can't believe no one else makes one of these!This is a much needed pouch.Holds 4 spare lithium 123 batteries.I got this and dummy corded it in my small GP pouch on my belt.This item is a must have if you lithium powered electronics.I also have one in my sling bag along with a dual pistol pouch with my leatherman MUTT tool and E1L flashlight.If you do not have one I strongly suggest you get one.Good thinking BDS,outstanding!