"Crocheted out of our Euroflax Chunky Weight, the loose fitting style of this jacket gives you ease and comfort while traveling," says Van Stralen. "With 16 colors to choose from you will easily find one to match your wardrobe. Gauge is 4 shells and 7 rows = 4 inches/10 cm with larger hook." This is a great jacket that's straightforward to make (flat sleeve tops, armholes indented once), but has couture touches too-- like back neck shaping. Crocheted garments tend to crease less than knitted ones, so the travelling recommendation is spot on. American crochet terminology.