With its slim shape and versatile black tone, this long-sleeved top makes a great base layer. It's made from a high-shine organic-cotton blend and designed with a mock neck and ribbed cuffs. Wear it with overshirts and tailoring alike. Slim fit Organic cotton is grown from non-genetically modified seeds without chemical fertilizers or pesticides Shell: 52% ENKA® Viscose, 43% Organic cotton, 5% Elastane. Collar: 100% Viscose. Excluding trims / Machine wash Back length of size M is 25.94" / Model wears a size M