100% cotton, perfect for spring and autumn. (Can be worn alone without being see-through; layering with Heattech or similar in winter is also an option.) Easy to use when the neck feels a little cold, such as in early spring or autumn. The neckline is looser than a turtleneck, making it easy to put your head through. It has been worn a few times and there are no stains or tears on the fabric, but please understand that it has aged over time.