LUXIAOBAO 5 Pcs Smile Face Shock Absorbers Tennis Racket Vibration Dampener Tennis Racket Accessories for Strings, Great for Tennis Players

As one might expect, these do fall off while playing, but that's kind of expected.But you get 5 of them in a pack, so it's pretty good value. They do the job

I love these. Great addition to my rackets!

Does the job and looks good

Lol