I'm 5'8"ish and 135lbs and i got a large. It fits baggy and steezy just like i like it. I medium on you would be probably like a normal fitting sweater. So idk if thats the look your looking for, but you'd prolly be better of with at least a large. But i mean you could always get it, and if its not the look your looking for then you could sell it on here.