Material: 95% Polyester, 5% Spandex.
Fit: True to size but runs slightly fitted in the arms. If in between sizes, size up if you prefer a loose fit. Model in white/black plaid is typically a small/medium and is wearing a small. Second model wearing the green/black buttoned is typically an x-small/small and is wearing a small. Third model is typically an x-large/1X and is wearing an x-large.