Sears burnt orange and tan striped sweater size 4T modern. It doesn't say what fiber it is but I believe it's acrylic. It's sort of scratchy, like wool can be, so a shirt worn underneath might help with comfort. The collar is more smooth and doesn't seem very scratchy which imo makes up for it.
Measurements are
14 inches shoulder to hem
11 inches pit to pit
10.5 inches pit to cuff