Mary Jane Mucklestone is one of our great knitting travelers, exploring the world with knitting in hand. And she has taught legions of knitters all about working with color.

We have long dreamed of going on one of her guided trips, so this Field Guide is a chance to set off with Mary Jane to explore Léttlopi, the worsted-weight Icelandic yarn that is so lofty yet warm.

Get ready for a season of cozy knitting with Mary Jane and her colorful ideas. Field Guide No. 17 is a collection of five designs to play with, with five interchangeable stitch motifs to knit again and again.