100% cotton (except in the Oxford Grey colourway: 90% cotton and 10% viscose). All colourways are made from 'organic in conversion’ cotton. Jersey fabric. Combed cotton. Slim fit. Round neckline. Trim in matching main material to finish neckline and armhole. Twin-needle overstitched finish on the bottom of the garment. No brand label on the collar, only a size tag for easy decoration.