Great product. I've been using them for over three years now and they are just absolutely great. They hold solvents/oils just great. I use the 2x2 squares from anything form 45-70, 44WCF, 45 Colt, 44 Colt. I Cut them in half for use in 38 special/357. I've never had an issue with them that's why I keep buying more.

Product says the Pro's love this stuff but with the little cotton fibers coming loose all the time, (remember this stuff is made from cut up underwear) and leaving tiny little cotton pieces all over the floor, inside and outside all over my guns ain't a good thing to me.
Maybe they can be used for something but I don't recommend using as gun patches especially when used when used with cleaning fluid or oil as the fluid just makes it order to pick up all those little almost microscopic pieces of cotton.