This is a "very easy fitting" vest to knit with super easy stitch pattern! Pattern stitch gives a nice detail, yet stability to vest. No buttons or buttonholes to work in. Easy fitting to wear over turtlenecks, light weight sweaters, and blouses. Will fit some children's sizes too. From sizes 35" to 48". Uses worsted weight yarns, and knitting needles US # 11. Use either a 24" or 29" circular needle to accommodate stitches. This is so perfect to wear around the house our in air conditioned offices!