When wanting to isolate a finger in training, the athlete should heed caution. Blowing a tendon is no fun. What this set does is allows the climber to isolate a finger but the bonus is that you can engage other fingers neighboring the one you are isolating with a squeezing grip. This takes weight off the isolated finger. Just be careful. If you are a new climber, stay away from these. If you are old school, then I trust you understand the risk of training at this highly experienced level. Smooth Yaniro texture.