The most arresting image of the shearling coat is, unfortunately, not its most effective advertisement. Only Fools and Horses’ Del Boy has cemented for many the relationship between the trusty sheepskin and market trading, a wide fluffy collar for the wide boy. If not him, the sheepskin was for many years a staple of football managers screaming from the sidelines during frosty winter fixtures, or of John Motson, a little cosier in his commentary box.

But what unites their appreciation for the sheepskin coat – more widely known as shearling, a coat that’s been made from sheepskin, tanned and dressed with the wool left on as its natural lining – is the fact that few pieces of outerwear, outside of the highly technical ones, are quite as warm. Seriously warm, in fact. And, often, since so much work goes into making said coats, seriously expensive.

The same idea was not lost on the aviators of World War Two. Undoubtedly more stylish, if only for its more macho associations, the flying jacket associated with The Few of the Battle of Britain – all outsized and belted up over those RAF blues – was also a shearling jacket, its exterior tanned and polished to a sheen, but the fleecy interior and huge collar retained. Before the advent of electrically heated flying suits, a jacket like this one literally kept you alive at altitude, as was the intention of its designer, one Leslie Irvin, who also invented the parachute ripcord system.

American B-3 Shearling Flight Jacket

Those of a less patriotic bent might suggest that it was the USAAF – the US wartime equivalent of the RAF – that wore the style best, with its B-3 model, complete with various waist and cuff adjustors, zips and pockets, and sometimes made from untreated raw white sheepskin. It became an icon of military clothing. The model had been standard in the USAAF since 1934 and such was its success it was still being worn well into the 1950s, when packing more technology into a cockpit – and a new wave of synthetic fabrics – made its bulkiness impractical. Not that it was a new idea for either side of the Atlantic – Iron Age man wore sheepskin coats, which had their moments of high fashion during both the Medieval, Tudor and Victorian periods.

But, of course, the warmth of the sheepskin or shearling coat is just one of its benefits. It’s the style that really sells it in these centrally-heated times – which is also why, for ethical reasons, many modern interpretations are faux shearling, with the best examples looking just as good. Levi’s classic trucker jacket with sherpa collar – sherpa being a kind of synthetic, wool-look polyester fleece – is a case in point. Plenty of brands, from Zara to AMI, YMC to Stella McCartney, have rightly ridden this horse.

Marlon Brando wearing a shearling jacket in On The Waterfront (1954)

Not for nothing did Skinheads – that austere style tribe spin-off from Mod – make a sheepskin their go-to winter outerwear, when the cropped 501s or Sta Prest trousers and Doc Marten cherry reds kept the winter out, but that MA-1 jacket really didn’t. Worn over button-down gingham shirt and braces, the sheepskin looked its best. The various panels that come together to make a sheepskin coat – as yet sheep big enough to provide a skin sufficient for an entire coat alone has yet to be born, though genetic tinkerers are no doubt working on it – have to be stitched. And a good example is sewn with a precision flat stitched seam which is so flat that the coat can be worn reversed, albeit at risk of looking something akin to a yeti.

Perhaps this is why, despite lighter, warmer, more compact and ethical man-made alternatives today, the sheepskin coat endures. Look at Marlon Brando with his shearling collared jacket in On the Waterfront or James Dean’s ranch coat in Giant. Or, more market trader meets hoodlum style, look to Steve Buscemi in Fargo or Ryan Gosling in Blade Runner 2049 – yes, even 30 years from now they’re still wearing them. There is something about the shearling collared jacket that makes its wearer look effortlessly cool, and something about the full-on sheepskin coat that makes its wearer look like he knows how to handle himself. It’s hard to wear a sheepskin coat without evoking some subtle hint of menace – see Tom Hardy as Bane for reference.

Artisan Shearling Jacket Producers

Maison Chapal

Chapal B-3 Shearling Jacket

This French tannery makes some of the best leather jackets around, and small wonder given its history – Lindbergh wore a Chapal jacket for his trans-Atlantic flight; and Chapal invented a lamination process by which sheepskin coats can be waterproofed. But expect to pay: its B-3 is €4500.

chapal-shop.com

British Sheepskin Company

Aged Sheepskin Flying Jacket

If you want a B-3 gilet or a sheepskin duffle coat, this family firm could be the place to come. BSC grew out of the once major sheepskin industry of Somerset, which sadly went into rapid decline in the early 1980s.

british-sheepskin.co.uk

Eastman Leather Company

R.A.F. 1940 Pattern Battle of Britain Model

This company has rightly won a reputation for making some of the best military reproduction jackets on the market, and its sheepskin designs are no exception. Its B-6 is a more toned down version of the B-3, best teamed – at least for the adventurous – with a pair of A-3 sheepskin trousers.

eastmanleather.com

Recommended Shearling Jacket Brands

Schott NYC

Schott NYC started out supplying bomber jackets to the US Air Force in World War II before shooting to fame after Marlon Brando donned its Perfecto biker jacket in seminal film The Wild One. Widely considered the ultimate leather outerwear brand, the American company offers shearling versions of all its classic models including the B-1, G-3, trucker and biker.

schottnyc.com

Saint Laurent

The shearling jacket was a natural progression for a brand that made the leather biker an integral part of its collections during Hedi Slimane’s tenure. The designer may have since left the company but his trademark aesthetic remains, with Saint Laurent’s designs oozing rock ‘n’ roll swagger.

ysl.com

Acne Studios

Known for crossing between the realms of culture, art and fashion, Acne Studios’ experimental twist on Scandinavian style has earned it legions of loyal followers across the globe. Its shearling outerwear stays true to form, with the Swedish label giving this age-old silhouette a contemporary update via colour, shape and detailing without straying from its minimal design ethos.

acnestudios.com

Brunello Cucinelli

If money is no object and you’re looking for a true investment piece, Brunello Cucinelli offers some of the most luxurious shearling jackets and coats on the market. The highest quality sheepskin is complemented by premium details such as cashmere trims and subtly engraved hardware to create a superior product. Expect to pay upwards of £5,000 – but they’re worth every penny.

brunellocucinelli.com

Ralph Lauren

The preppy stalwart offers a superb range of authentic Americana workwear via its RRL sub brand, with shearling outerwear taking pride of place. Expect classic, masculine shapes including the trucker, bomber and ranch jacket that will slot straight into your weekend wardrobe. Meanwhile, Ralph’s Purple Label line offers high-end versions in sleek shapes that ooze luxury – and have price points to match.

ralphlauren.co.uk