I bought the XXL Hub earlier this season. I'm 5'11" and can stand fully upright with no problem. The way the windows are arranged, there's excellent visibility 360 degrees around. Some of the windows have zippers, and others are held up by small elastic straps. The zippers are relatively quiet. The top of the mesh screens in the corner windows can drop down, presumably to stick the muzzle of your gun out. The XXL model is constructed with a heavier gauge material than other blinds I was looking at. It takes about 5 minutes to set up. So far it hasn't brought a deer into view, but I'm otherwise happy with it.