I usually wear a ten but ordered an 11 and it fit perfectly. The charge life is fantastic, Ive used them for week every night and didnt need to charge them. These are great headphones folks, Ive been using them about a month. I am not sure if the cell phone headphones mic works on Xbox live as I was never able to test. I also find it amazing at soothing painful lats and arms after swimming freestyle 3-4 times a week. The instructions are clear and easy to follow, I was all set up in a couple of minutes and ready to go. It fit perfectly in the cabinet which is what I wanted because I didnt want spices on the counter. With this in place along with the dual-vent fans the issues with moisture from the shower and the stink of pooty are no longer a problem. the upper part gets really HOT! Pros:Battery life lasts about a week sessions (~4 hours/day)Clear and loud mic qualityLED lights on the amp is a nice touchSound quality (very clear & the "super hearing" option does vastly improve what you hear around your surroundingsComfy headset (I have a somewhat big head and its pretty comfy)Very customizable to taste (Amp has many options)Wire is of acceptable length (not too long or short)Cons:Headset depends highly on the amp, if it is turned off your accessibility minimizes greatly (cant