I love these gloves because they are so convenient. You don't have to go through all of the hassle of wrapping your wrists; you just slip them on and go to it. They are comfortable and offer enough protection for any moderate bag workout without the bulk of some of the more popular gloves, plus they are way cheaper.
Another plus, for me, is that these gloves are made from Neoprene instead of leather, so they are suitable for vegans. And, I think they hold up just as well. I've never had a problem with mine and I've used them for over a year now at a class that meets three times a week.
The problem with these, as with all boxing gloves, is they will stink after a while since you get pretty sweaty during your workout. Luckily these babies are washable! Either dump them in the laundry every once in a while, or hold your nose when you take them off. Happy sparring!