This is what the San Francisco Chronicle said about the Quantum Hood:"Made of 100 percent merino wool, the mid-weight jacket is cozy and soft - but lacks the itch factor. The sleeves come with thumb loops, so you can secure them lower on your hands when the weather's cool. The reflective front zipper comes in handy for wearing at night, and eyelet gussets in the sleeves aid in ventilation. Each Icebreaker item has a "baacode"; enter the number in a box on the company website to see where your wool came from."
Read more: http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2011/05/27/TRJC1JAU0U.DTL