The "Effects": The pads protect hands well with exercises like pull-ups and the like. Although calluses are probably completely impossible to avoid, but one has while exercising no pain on the hands and skin and tears no longer. Since the pads are relatively small, you can perform exercises such as deadlifts more difficult with them because they are not wide enough to completely to hand a barbell. But they are so small that they can be accommodated in each pocket.
All in all a good product from quality materials, which is a real help in training.