Got this to install an old HTC One M8 with a 10,000mah battery attached. It was stretchy enough to fit both of them easily. Later I used it for a fairly large Oukitel WP2 which fits snugly and comfortably and now I use it to carry a Samsung Galaxy S8 Active and a small spare external battery that fits in an outside pocket. The only thing I didn't like. There was velcro on the valve which I removed and just used the quick release buckle. It sticks well to everything I've used and protects it from danger. The only issue I had was the combination of the phone and the huge battery weighing my pants down. Not the holster's fault, but that it added more weight than usual.
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