I have shoulder pain at night and I don’t want to wear it at night but I have been successful wearing it throughout the day. I’m not certain of the cause of the pain as most problems have been eliminated by my doctor. My experience so far is that it is actually more comfortable than I expected. I had to work at adjusting it but I succeeded. I wear it during the day and have noticed that when I take it off for sleeping my arm is not as painful. The brace worn during the day seems to prevent the sort of wear and tear that causes the pain when I try to sleep. So far I am happy that I purchased it.