I have recently met with such a problem and noticed that it's a little bit hard to find a good string silencer nowadays. There are a lot of companies which produce them, but not all of them make good quality products that won't tear after several uses. I have looked on
https://hibipod.com/best-bow-string-silencers/ to see the best string silencer which I can buy now on the marketplace. I usually use that site when need to buy anything because they make their ratings according to all the reviews and peoples' comments about a product, and also according to the price and company that make it they place them on ratings.