First off, the service from Fotosense was first class - I ordered late on Wednesday and the bag arrived at lunchtime on Friday. The Interfit bag itself isn't bad, but I found it needed a little modification. You can fit the stands, soft boxes and cables into the base and still have room for some other bits of kit - maybe a camera tripod and some other bits. You then put the supplied protective layer on top of them which gives you a flat surface to sit your lights on. The lid expands to accommodate the lights when you're carrying stands etc in this way. Interfit supply a divider to keep the lights apart - but the problem is that they can each still slide around in their half of the bag - at least with my CoolLite 5's they could! As a temporary measure I put into the bag the boxes that the lights arrived in and then put the lights into them. When I get time I'll buy some big chunks of foam to hold them in place instead of using the boxes. In use, it's a big bag, but pulls along ok on the two wheels and is a neat solution for transporting my lights. The bag stands up fine on a flat surface thanks to two little legs. I wouldn't risk putting it in the hold of a plane, but I think it'll be sturdy and protective enough for normal use.