They are quite small and fit well in my ears. It has great loft, good quality, but it squishes out during the night so that you end up on a flat surface (see my review on it). Electrical shock when used for a short time I have owned several pairs of isotoners in the past and all in the same size. Give it a try and you will not regret for buying these. I am sure when I wear them more they will be comfortable. I am trying to use this on a weight distribution/anti-sway hitch, so there are a lot of extra welded metal parts I have to deal with. But I put it on. In that area they feel more like a fake knockoff. Looks better, in my opinion.