Jamie's Waistcoat is designed by Jessie McKitrick and knit in Trendsetter New York, a 100% organic, woolen spun yarn that knits tp a DK or sport weight. This piece is knit flat on a 60" US 4 circular as well as a 16" US 2.5 (3mm) circular, or needle size to get gauge. It comes in 5 sizes, so there is sure to be one to meet your Highland desires! Sizes: S(M, L, XL, 2XL); 36(40, 44, 48, 52)" The pattern does NOT come with the kit. The pattern is in the book.