Review on OP/TECH USA Battery Holster: Compact SLR Battery and AA Batteries Case by Tony Francis

Although it claims to fit thin wearers, it actually isn't. The bag (no battery inside) likes to slide over the strap, which can be annoying. The velcro used for the belt loop doesn't actually hold the bag to the belt, but can snag on edge seam belts (on belts that don't slip) and damage the seams. I don't have a uniform nylon belt or leather belt). I'm sure this sheath will work decently on a wide belt, up to the width the belt loop can fit, but it's not for me with a narrow belt used for light weights. Mirrorless camera. I'm pretty sure this won't happen on a high-end compact or bridge camera. So your mileage may vary! The materials also appear to be durable as they are mostly made of neoprene or similar material. I would only recommend this for DSLR users with a basic (usually wide) shoulder strap. It will likely be uncomfortable with multiple adjustable straps.