Material: 45% Viscose, 28% Polyester, 27% Nylon. Extremely soft, fairly lightweight and very stretchy.
Fit: True to size with a little room. Because it is so stretchy, you can size down an entire size if you don't mind it more fitted in your arms. First model is a true small, wearing a small/medium. Second model is an x-small/small,wearing a small/medium. Last model is a true 1X, wearing a medium/large.