I bought some of your (Perfect Hatch)Squirmy Wormy material years back and lost the packaging. Best stuff I’ve used and used it up. Anyway , I bought 3-4 other types ,thinking it was all the same, and tied them up, the other brands do not tie up good at all, ie. cheap, thread would cut through material, worms would deteriorate while in the fly box, etc. These are the absolute best material for tying any type of squirmy worm or San Juan type worm, very durable, the others do not even come close period.