Waffle lined shirt. All seasons, but great for summer nights. Super cozy. 100% cotton. Bought new. Very good condition. Only flaw is a small amount of fraying at the collar. See photo 2. Washed 3 times in cold water. Measurements: Pit to pit: 21 inches Shoulders: 18 inches Arm from shoulder: 23 inches Length from collar base: 26 inches Fits small to medium. From a non-smoking, non-pet household.