NWT J. Crew Buffalo Plaid Flannel Button Up Shirt Jacket size M A great piece for each season and especially in between. Throw on with a tank and shorts when the evenings get a little cool. Or layer with jeans and boots when it gets really cold. Full button up shirt, placket in front. Two chest pockets and a pocket on each side hem. Reinforced side hem split makes a pretty silhouette when worn untucked. Not too thick to tuck or tie. Sleeves have functional buttons but can be rolled up for a different look. Runs slightly large. Material is 100% cotton. Machine wash. Approximate measurements: Underarm to underarm: 23" Back length: 29 1/2"