I received the jacket in Australia (posted direct). Its always a challenge buying online due to not knowing the sizes. I'm 6'3" and I would say well built if slightly overweight - 240lb. I bought XL and though it doesn't sit on me as loosely as the model shown, its probably the best fit. So, I would say its fairly true to size. I wouldn't try to put a jumper underneath it however. It would be too much of a snug fit. If you had a need for that then I would go XXL. It has that quality woolen feel even if its only 60% wool. All in all, a very nice piece of clothing. Certainly warm and comfortable.