Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: How high is this neck brace?
Document: I have a short neck and this piece was way too high for me, making it very uncomfortable to wear when watching TV, trying to read, etc.
this is easy to wash but less comfortable than the one I bought for $10. I use it to keep my neck straight while sleeping. Too high for a normal neck. Not recommend it.
On a 10-hr flight it allowed me to sleep without ending up with a sore neck and snoring in front of strangers. It will be part of my travel gear from now on. The cost plus shipping was high.
I found this uncomfortable and my neck hurt after using it. I believe it is too high, and needs to adjust more easily slightly below the neck. I would never wear it on an airplane flight.
This neck rest is constructed as described. I found it to be too high for a sort neck and too low for a long neck. I agree with other reviewers that the circumference is on the small side of the advertised measurements and hot in use. This item is not being used as expected.
I ordered a regular size and I am a small person, this item was a bit small (short) on me. Therefore I feel the velcro in the back of my neck. I like that it wicks sweat away and that it is not as high as a cervical collar making it more comfortable to wear. Being able to sleep in it has helped decrease my discomfort.
I had high hopes based on the reviews. It's not quite the neck savior of the century, but it's pretty good. When I put it on, I do feel my neck relax, but for some reason I want to take it off after a few minutes. The benefit is in feeling how to relax all those muscles in the neck. Hopefully I can continue to become more aware of how my neck feels when it is relaxed.
I have major neck problems to where it actually tips to the side and creates a lot of pain. This product has allowed me to use a lot less pain meds. I don't wear it all the time, but I do when I'm working. I would highly recommend this. Although it is a bit too high for this short necked person, it still works very well.
I had high hopes for this product after reading some of the reviews. But it was a waste of time and money. I am returning it today. It is quite a bit smaller than the picture's impression. Like a lot of items, the picture is short on detail too. The "fat" support part fits to the front of your neck per their instructions. Whereas, the problem with my neck is at the back, namely the cervical disks.
I like the concept but apparently my neck is shorter than this was designed for. Front is 3 and 3/4 inches tall which is too high to be comfortable for me. Planned to use it when travelling to prevent neck from straining forward or to the side. Time will tell how it works but not something I would wear for extended period of time. Compact so it won't take much room when packed. Received quickly.
Answer: I'm confused by the ? Actually height  is about 4 inches. Works nice to support you're chin. Suggest you choose 1 size larger  then u r thinking of getting. Hope that helps