Cottonrich base – 70% Pure Cotton/30% Poly. The entire collar is made of fabric, easy care machine wash. The collar is double fused and the shirt's inside band is buttoned to size. This provides the best ever fit and the greatest comfort. Specially designed by mds for an unmatchable fit and comfort. No pesky plastic to bite/pinch the neck skin. The same highest standard for the shirts as in all mds shirts.USUALLY SHIPS VERY FAST