Her thimbles are based on finger size... not so sure about the needles... actually didn't know the needles came in sizes! Took a class several years ago in OKC at a LQS and a package of needles was included... But I use a slightly shorter needle. I quilt in a hoop with plenty of give in the quilt and I, too, "kind of sort of" use her method. I LOVE her thimble! When I ordered another thimble recently, I think it came in about a week? maybe a few days longer than that.