[0.1 lb] I purchased this product specifically for when I want to carry my camera with my 70-200 2.8 lens attached and I am limited to the size of a case. This works perfectly. Works with my camera strap and protects the bangs and bumps so I am more comfortable with it than without it.

[Carabiner] I was worried that this wouldn't be big enough for my everyday walk-around rig, given some of the other comments. I'm carrying a 5DII with an old Canon 28-300 monster in my purse with this for protection from purse trash. The specs/measurements indicated that this would be an exact fit for the lens, and I'm happy to say that it's actually a little roomy with plenty of space for the hood to live in the BodyBag as well and rattle around if I don't screw it on. The pro fit is also perfect for my old camera with any hand strap attached. It's perfect for my use.

[Carabiner] CONVENIENT FOR STORAGE AND BATTERY PROTECTION

[0.1 lb] Holds 4 AA batteries easily and will be easy to locate in my black bag quickly because of the color.

[Carabiner] I use a Nikon D750 (medium body) with a Nikkor 70-200/2.8 zoom for on-the-water sailboat racing photography. I sometimes want protection when on the move and not shooting, in a boat, without hard cases, etc. This is the only cover that I found that will fit this set up. It will also work when I add a teleconverter. Should also work with my mirrorless Nikon body, FTZ adaptor, and this lens. That satisfies my use case perfectly.

[0.1 lb] My use case:

- I'm not a pro
- I will not be carrying / exchanging other lenses
- I might carry a spare battery
- I will have 2 SD cards installed in the camera and don't plan to carry others
- I will generally not be setting up in a specific spot / tripod; I will be sight-seeing, walking, etc, and trying to capture wildlife or scenery at some distance with a 100-400mm zoom lens
- for macro or normal/wide angle shots, I will likely be using my iPhone
- I will be wearing a backpack for other purposes: water bottle, clothing, carry-on

So, the point is that I will not be carrying a lot of accessories, and I want the camera to be ready to use around my shoulder. Or, I'd like the option to retreat the camera into my backpack when not in use for an extended period. But either way, I still want to have some minimal protection from splashes, bumps, direct sun, etc.

This product seems to work. I had something similar for my 270mm Tamron zoom with my Rebel. The shoulder strap connects directly to the camera and fits out the small openings under the back-flap, which Velcros closed. In a pinch, I could let the case dangle from my camera strap from the included tether, so I don't have to figure out where to put it if I whip out the camera from the case to start shooting. Or, just un-tether the case and throw it in my backpack, where it won't take up much space.

The length is long enough, btw, so that I don't have to remove the lens hood. Overall, it's a bit roomy for my Canon R7+Canon RF 100-400mm, even with the lens hood installed. But the smaller alternative B&H has is just too tight around the battery grip, and fairly snug around the lens cap area. So I had to go bigger.

Would be nice if there was a little pocket in there for small accessories like the spare battery or SD card; fortunately, I have room for stuff like that in pockets of my backpack. But I really don't want a SECOND bag to carry around just for the camera.

This works.

[0.1 lb] Fits my Ricoh GR iii easily and separates them so that there can be no accidental short.

[0.1 lb] Great little battery pouch. I put 8 AA's in it. Keeps them from falling around loosely in a bag.

[Carabiner] Perfect protection for those awkward long lenses!

[Carabiner] holds the right amount of AA batteries need at one time.