Great to help fit chest rig around heavy jackets
My pattern 83 chest rig fits fine when fully extended for my broader build, but during the colder months where I add layers, a fleece or even perhaps a jean jacket, the rig gets a little snug, so I got this to free up the extra space and it works great, only problem is that the buckle on mine is sized slightly different than the one on my pattern 83 chest rig so I have a hell of a time removing it if I ever wanted to. I'de say if you were on the fence about it, go ahead and grab one.