This is the way that used to make sweaters for skiing and snowmobiling. 100% wool but it has to be dry cleaned. You might be able to use Woolite and cold water. This does not have a label that states the size,so please look at the measurements. I'm guessing that this is either a medium or a large. There is some piling, which means fraying of the wool fibers. densely knitted and super warm. this is a great outdoor activities sweater. the sleeves are gathered to keep the cold out as well as the waistband and collar. Used to have a cat many years ago. May contain some stray hairs - but this sweater was put away after being dry cleaned. Bundle for more savings! weighs 1 lb 3oz