ADV Tennis Dampener with Custom Feel - 3 Pack - Racket Shock Absorber to Reduce Vibration, Relieve Symptoms of Injury and Stay on the Racket - Engineered Poly-Silicone Tennis Racket Dampener

Love these guys. They work better than the average dampeners.

I can confidently report that these do not work as a guitar string dampener, at least on narrow neck guitars like the strat.

Who knew these would fit perfectly between guitar strings for a perfect fit guitar mute.

Cheap and they work well. I feel like I hit it with the ball sometimes (I’m a novice). Making a bit smaller would be good, but great product. I play twice a week and I’m still on my first one after 6 months.

The product literally doesn't work. When I hit the ball it makes the same sound as if there's not even a dampener on.

I have put one of the three square damps on each of two racquets, a Prince and a Babolat, which both have 100 sq.in. heads (midplus). The damps push the two center mains apart on both racquets, so I can only conclude that these are made for oversize racquets specifically with open string patterns, which would have a little more space between the mains. I'm sure ADV is a good brand that means well, but I can't reconcile their lack of brand presence and neglect of indicating that this product is catered to a specific racquet class. For that in addition to the fact that they don’t fit well on a mid plus racquet with 16 mains (read: most common racquet form factor), I knock off a star. But in brief use with the Babolat, it performed just fine. If you are a beginning player or on the smaller/weaker side of human variation, you probably want to be using an oversize racquet with an open pattern anyway, for added power. These dampeners will work well for you, and I really must recommend them for the channel-locking structure that clamps around the string—you won't have to worry much about the damp falling off during games.

never lose

It does not function as good as other dampeners