Seger Sports Women's Merino Wool and Bamboo Beanie pom 70% Wool/30% Rayon Imported Hand Wash Official sponsor of the Swedish national ski team One size fits all Bamlana is a New ecological material made of bamboo fibers and merino wool. I t is 100 percent natural and provides outstanding moisture transport, ventilation, and thermoregulation. Furthermore, bamlana is odor resistant lightweight, soft, and very comfortable to wear