Snug fit, but works!
Based on other reviews, I wasn't sure it would fit my hairdryer, but it was $6 with Prime (free returns), so it seemed low risk. I have a Conair Cordkeeper 1875 which didn't seem like it had a giant barrel when I got it, but most diffusers seem to be made for smaller dryers. This *barely* fit. I thought I was going to have to get a pair of pliers involved to get it on or that I might have to send it back altogether, but my husband was able to get it on the hairdryer. If I had to take it off and on regularly, it would be a pain, but I don't. Happy with the price, and it does what it's meant to do. Potentially requires some manhandling to get it on the dryer, and I do have to adjust it a little if it collapses while in use, but I do love that it was affordable and ultimately fit the hairdryer and that I can dry my hair without blowing all the curl out of it.
Rating: 4 stars