This pattern can be found on pages 14-17 of Knitting Green: Conversations and Planet-Friendly Projects, by Ann Budd with contributions from some of the knitwear industry’s leading designers. The eco in Eco Wool means that this yarn is neither dyed nor chemically processed, but instead of having the raw feeling of many minimally processed yarns, Eco Wool is surprisingly smooth and clean. Katie Himmelberg used this earth-friendly yarn to knit an unstructured vest that can transition from fall to spring. Katie knitted the vest in a single piece to the armholes, then worked the back and fronts separately to the shoulders. The shaping is achieved through cable stitches rather than increases and decreases.