The mac is made of four fabrics. Most prominent is dry-waxed cotton made by British Millerain of Manchester. Matching it is pindot Yorkshire wool-cashmere used for the collar and internals. The combination makes the mac splash-proof outside, and luxuriously skin-friendly on the inside.

The mac has deep hip-height slouch pockets (above left), and a concealed placket lined with the cashmere (above-right). The back of the mac has a deep pleat (right). It aids freedom of movement, and means the mac widens from the chest down. The pleat has a button-fastened tab.

The back panel of the mac is lined with a mid-weight, natural-coloured linen from Lancashire. An exceptional outerwear cloth in its own right, it is lightweight and very durable — and is thus an excellent candidate for lining.

The internals of the mac — pockets and facing — also use the wool-cashmere. Here are the pockets — the small chest-height patch pocket (right) and the larger foolscap / A4-sized pocket (below left) The buttons on the mac are made of real corozo nut and are off-white in colour.

The cashmere collar of the mac comes from a mill in the Heavy Woollen District of Yorkshire. Now into its third century of being, nowhere in the country knows machine-finished cashmere better. The cloths off its line are of the highest grade — a familiar boast, here entirely merited.

The corozo buttons are made — that’s cut, dyed, and polished — by the last remaining manufacturer of horn and corozo button in England. Based in the West Midlands, the factory has been in the hands of the same family since opening in the mid-1800s: five generations of top-quality button-making know-how.

The garment is made and finished in a small factory in North London, which excels with outerwear, shirts, and trousers. It’s a place of meticulous cutters, unflappable seamsters and seamstresses, and a well cared-for and marvellous-looking contraption for making button-holes.