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)
Causes of Cold Sweats. Anything that causes a fight or flight response in the body can cause cold sweats. Shock is dangerously low blood flow to the brain and other vital organs. The lack of blood flow delivers less oxygen and nutrients to the brain, which causes stress.