Butch’s Triple Twill Patches Remove Fouling faster than ordinary cotton flannel patches. To complete the ideal cleaning system, Lyman developed the perfect patch. Like Butch's bore shine, these patches offer superior performance. They hold more liquid and remove fouling faster than ordinary cotton flannel patches. A special fabric used in laboratories and cleanrooms, Triple Twill's special weave has hundreds of tiny "ridges and drop zones" which scrub and capture fouling residues far better than other patches. Butch's Triple Twill patches don't shed lint and have been specially treated for maximum absorbency.