KingKamCollapsible Silicone Hair Dryer Diffuser - Travel and Easy Storage - Fit Nozzle Diameter D-1.575Inch to 1.968 Inch (4-5cm) -Pink

I bought this for traveling. It fits my hair dryer at home but it hasn't fit any of the hotel hair dryers I've tried it with. I've been able to just hold it on the end of the hair dryer and it's a little clunky but works well enough for a quick touch up. I wouldn't want to use it after washing my hair but for non-wash days, it's manageable. I needed something small and easily packed without taking my actual hair dryer, this got the job done well enough.

It's a little flabby but for the price it works

Love this! Dont even attach it to a blow dryer and it works amazing. Wish it didn’t collapse as easily though.

Works great. I love it

Bought this for a trip where I needed to travel very light. Normally, I travel with my own blow dryer and diffuser. While not perfect, this did the trick! Much better than those so called sock diffusers for travel. Folded up flat for travel, fit nicely on the hotel dryer. This was at Disney's Saratoga Springs for reference (in case anyone else is searching). It does get pretty hot which is not unexpected.