This is a short-sleeved shirt with a casual design, made of soft, thin, yellow polyester material. (Subjectively, it's a slightly orange-tinged yellow.) The collar is not removable... Fabric softener has been used. There are no noticeable flaws, but there may be oversights. The color may appear different in person than in the images. Please understand. - Brand: earth music&ecology - Color: Yellow - Size: F - Material: 99% Polyester, 1% Polyurethane Thank you for viewing.