Boucle can be made out of a lot of different things, but I would say if you're not used to working with it try something acrylic, like Bernat soft boucle yarn. As an acrylic, it can be machine washed and is very durable.
cold sweat - the physical condition of concurrent perspiration and chill; associated with fear. fear, fearfulness, fright - an emotion experienced in anticipation of some specific pain or danger (usually accompanied by a desire to flee or fight)
Frequent cold sweats. Frequent cold sweats. Frequent cold sweats: See also some of these symptoms or medical conditions for possibly related medical information (note that there may be other causes or relevant symptoms so always see your doctor): frequent symptoms. cold sweats.