Its big, it falls off very easily, when your moving around quickly it will make your flash head flop around, it draws a ton of attention where everybody will ask you what it is, using it lowers your flashes power, soft material gets harder over time which makes it more difficult to manipulate on to your flash when you're in a hurry. My last one fell off when I put my camera down by my side while photographing high profile events and I lost it. They are very expensive as well. When I did use it I liked it at first where I bought one for my 420 EX and my 580 EX where I had the clear version and the frosted version and I also had the amber dome, chrome dome and frosted white dome. Spent a couple hundred dollars and now I never use them. Most of the time when I did use it I took the domes off and tried to bounce it as much as possible.