I just bought Large (supposedly 12oz) RIVAL D3O INTELLI-SHOCK BAG GLOVES off amazon and I don't think I can return them because I used them and the tag ripped. I use 16 oz cletos reyes gloves (actually weigh closer to 18oz) for sparring and I used to use them on the heavy bag but they don't offer good support when I wanna throw full power. I have had minor wrist issues for a month or two. I wanted heavy bag gloves for more support. It seems like all heavy bag gloves are really light (10oz or 12 oz). I'm just posting to get some reassurance. Is using 12oz bag gloves going to hurt my training? Are these gloves any good? The wrists seem thin and don't hold up well when I throw hooks. Why are heavy bag gloves so light? Should I stop throwing long hooks that don't land clean on the knuckles? Do you think amazon would let me return these? I'm hoping some high level ammy boxers or pros will answer this. My amateur record is 14-2 FYI so i'm not a beginner, I'm just worried I wasted my money and I can't seem to find a glove that satisfies all my needs.