The modern Fair Isle patterned stripes in this relaxed-fit vest make for a satisfying knit. Although it might look intricate, the Sirdar designers have used only two shades of Cashmere Merino Silk DK in any one row, so it's not quite as tricky as it appears. The garment, which is worked flat, is available in six sizes ranging from 32-34in to 52-54in chest.