My husband loves this jacket! It runs big though. The small fits like a medium. He is 5'8" and 150 pounds. We thought he needed a medium bc he was going to be wearing it over another shirt and he usually will buy a medium in a jacket. Luckily he had tried it on in a store in a medium and realized he was going to need a small so I knew what size to order. The price was way better on Amazon. This jacket isn't too heavy and not too light. Literally the perfect weight for when it's a little cool out in the morning and then warms up in the afternoon.