I picked this up from the library on a whim. Many of my friends are knitters and this seemed like a book they might be interested in learning about. And I was right, I was really impressed. The authors presented a really informative as well as (seemingly, from a non-knitter) useful book. There is a lot of information about sustainable, green and eco-friendly materials, of course. But there is also information about other topics including ergonomics, recycling, even reflexology. And the designs are really cute! The book is lovely as well. I'd recommend it for knitters or as a gift for the crafty set.