No, they do not protect against hernias. While it is possible to develop a hernia when you are going to pretty heavy reps, these products are focused primarily on lending support and protection to the spine, and hernias are a result of pressure on the abdominal wall. There isn’t any gear we can recommend to prevent hernias. The only way is to lift cautiously and responsibly. Never go past what you determined limitations are and always breathe through your stomach.