My husband received this as one of his birthday presents to match his other 49er clothes. He's a big 49er fan and loves this shirt! It comes with a pair of jogging pants, which he also got with this one. Great for watching games in Wisconsin or under one of his 49's jerseys. It's like a long underwear material. We received the XXXL in error, but the exchange was easy. He's 5ft 4in and 130lbs, the little one fits perfectly.