Mountain Muffler string is a custom made string that has wool puffs on the string where it contacts the limb and wool puff silencers,work great on recurves.I believe he makes them in dacron and D97.Bow hush and hush puppies do the same,but you can install them on your string yourself,great products.Mountain muffler strings are made up with all that on the string as a complete package,you just need to put on a nocking point.I myself prefer bow hush because I make my own strings,it's sold here in the sponsor's section.