About The Design: This vest comes in 4 sizes and is knit in an unusual yarn: Bollicine Revolution. Revolution has high yardage and makes a lighter-weight garment than other yarns of its thickness. Note: This yarn is really a chunky wt, but that designation isn’t available in the list above. Sizes: S / M / L / XL Chest Circ: 34 / 38.5 / 43 / 47.5”