Material: 95% Cotton, 5% Spandex. Very stretchy, extremely soft material. Very minimal fleece lining, doesn't add thickness.
Fit: Runs more fitted and narrow with a longer length but it does have a ton of stretch. If in between sizes, definitely go with the larger size and the sweatshirt will me for fitted and "give" a little as you wear it. For a looser fit or if you like to hide your mid section more, go up an entire size. As a size 6/8, and typically between a small/medium, I would wear a medium for a fitted look but would prefer going up to a large and possibly pair with leggings too. For Plus Size in this one, I would go up 2 sizes for a relaxed look.