100% organic merino wool! Cute cozy baby sweater. No size tag but fit my little one 0-9mo. I believe this sweater was put through the dryer at some point, so it does have a more felled look. Please note that the back neck has been snipped in order to make it easier to get over the head. I always intended to stitch it up cute but never got around to it. See pic. Priced accordingly.