I ordered this diffuser very recently, and was anxious to try it out when it arrived. (Good delivery time, by the way.) I was very surprised to discover that the package contents did not match what was described on the package. The diffuser is supposed to strap onto the flash unit by first wrapping the flash head with a "friction band", and then the assembled (I assume by some method involving velcro) diffuser, which has had a velcro strap threaded thru loops on the diffuser, is placed over the friction strap and tightenes to hold the diffuser in place. These instructions are clearly printed and illustrated on the packaging.
1. No loops on diffuser.
2. No friction strap.
3. No way to assemble the diffuser.
4. The only possible method of attaching this thing to the flash unit is by the supplied 4 velcro "loop" patches which are apparently to be somehow glued to the flash unit (of course, unacceptable!). These would be grabbed by "hook" patches heat-welded to the plastic. Of course, the loose patches had no means discoverable by which to adhere these to the flash unit, even if I had wanted to do so.
5. The diffuser face of the unit was marred by a large oval of welded plastic, which would certainly project artifacts on the subject being photographed. Not a good thing.
6. Even at the low $12.95 price this thing is way overpriced.
I of course returned this to Amazon the same day I received it. They handled the return very well and quickly. They are a quality concern, and I will certainly be dealing with them again.