I love love smartwool stuff, everything they make is just great. But...This is the second smartwool sweater I have owned and I just don't understand why the wool pills so much! The first sweater was purfect, just the right size and the right warmth but after about a month of wearing it it developed holes and massive pills all over. Same thing with the new sweater, it hasn't developed any holes but the pills are everywhere! I still wear it, I think that the warmth level of this sweater is just purfect. In case you were wondering, no, I have not washed it as I am afraid of what might happen. Love Love the smartwool sweater, just wish they wouldn't pill and wear out so fast for the amount of money that they cost.