I’m not one to write reviews, but this time around I just had to. I go the gym inconsistently, so I frequently develop calluses and then lose them. I recently purchased the heavy hand grippers on Amazon to develop my grip strength. I was working on closing the 250 lb hand griper, and using grip pads purchased by my local Bally’s gym since the metal would grate on my hands as I closed the hand grippers. I slowly developed a callous on my left pinky crease. Long story short the callous ripped off as I was closing the hand gripper and my meaty flesh was exposed. I decided to purchase the Grip Power Pads because I saw a bunch of positive reviews. First off I noticed that the shape and size of these grippers was professionally done, not like the ones I purchased by the gym which were cut with scissors. The next thing I noticed was the quality; the no name brand that I previously purchased was flimsy, pieces was regularly come off and I wasn’t sure if it was mixed with latex, these are pure rubber. The most important point I want to bring across is that even with my newly healed skin, these pads improve my strength and does not aggravate the newly formed skin, which for me is amazing. Highly recommended product.