Our series enlists expert help to pinpoint every new piece your budget should buy. This week, what to buy when you’ve got some cash to spare.

1 Heavy Duty Field Jacket

A multi-use jacket needs to be durable enough to survive all the elements – which is why you should opt for something purpose-built.

“The field jacket is the ultimate multifunctional staple,” says Joe Ottaway, personal stylist and the man who makes David Gandy look good. “Its sole purpose is to protect against the frosty countryside and the same heritage roots that provide a classic aesthetic.”

Better yet, the opportunities to wear are endless. “From being dressed with a pair of jeans and a roll neck to a Pitti-worthy look over a double-breasted blazer, the field jacket’s versatility justifies the spend.”

Musto Shooting Checked Stretch-Tweed Field Jacket, available at Mr Porter.

1 Quilted Gilet

And the country flex doesn’t end there. A streamlined yet insulated gilet gives you options beyond the dog walk.

“Gilets are an exceptional way to style winter looks,” says Ottaway. “Not only are they lighter than a big overcoat, but they retain warmth when layered over a multitude of pieces. Think blazers, roll necks and thin heritage jackets.

Look out for shades of navy, black and grey, which will blend into your current wardrobe (odds are you’re not going to pick up a style for every outfit). And avoid anything bulky. Fits should sit close to your body for more layering potential.

Barbour Essential Gilet, available at Barbour.

1 Grandad Collar Chambray Shirt

Wardrobes require more than heritagewear, though. And, if you’re to layer successfully, Ottaway reckons your grandpa’s garms possess real merit.

“The grandad collar shirt is a sharp alternative to the classic Oxford. Not only can it relax the aesthetic of a full suit, but it’s a more natural fit with shorts and herringbone trousers.”