Bags are unique as they’re designed for carrying just your camera with your favourite lens attached and that’s it. There’s no room for an extra lens or accessories with these bags, so what you see is what you get! Depending on the size, there are holsters for mirrorless cameras as well as holsters made to fit DSLR cameras .
Another different feature of the holster bag is many are designed to hang off your belt around your waist in addition to being carried by a strap. This is great as it takes all the weight off your shoulders and gives you extremely easy access to your camera.
bags are made to really protect your camera. When you slip your camera into the bag, it sits snugly with thick padding around it, and they usually come with a built-in rain protector too which you can easily slip over the bag.