They are very comfortable and I can wear them to work, which is at least 8 hours on your feet the whole time. But for those who don't wear heels very often, they may be uncomfortable to wear over long periods of time. I wear a size 8 and they fit me perfectly, not too tight at all.  The heel is the perfect height, not too tall or short. I love them! I only wish they were a a darker shade of red.