The Unstructured Blazer

More adaptable than your traditional suit jacket, an unstructured blazer saves packing space since you can roll it up without it creasing, says stylist Joey London. It also means that one jacket will work from stuffy meetings to the bar afterwards: “It’s extremely comfortable and looks great worn casually,” says London.

(Related: Make a better first impression with the ideal business travel outfit)

If inclement weather means you need a structured jacket’s padding, ensure you wear it on your flight if you’ve only got carry-on luggage. Odds are you hotel doesn’t have an iron, and that trick about a hot shower steaming out the creases is no match for nine hours in a suitcase.

Gant Rugger Navy Slim-Fit Cotton-Piqué Blazer, available at Mr Porter, priced £295.

The Cashmere Scarf

Superfine fibres ensure that cashmere punches well above its weight in the keeping you warm stakes, but still packs down into a pocket when you’re on the move. It’s the extra layer that means you don’t need to pack your most suitcase-unfriendly coat, but is light enough to drape under a jacket if you’ve misjudged exactly how cold Naples is in April.

“It can also double up as a pillow on the plane,” says London. Or a barrier against your neighbour’s fondness for the air conditioning.

J.Crew Cashmere Scarf, available at J.Crew, priced £44.

The Slip-On Sneakers

Comfort is key when you’re navigating interminable airport corridors and squeezing into EasyJet’s child-sized seats. So swap the work shoes for something less oppressive.

White leather, slip-on trainers are smart enough to wear with jeans or to dress down your suit. “They complete a look and keep you comfy all through your travels,” says London. The queue behind will also appreciate how quickly you can take them off when it’s your turn through security.

(Related: Why you should add a pair of leather plimsolls to your SS16 wardrobe)

Vans Vault Classic Slip On LX, available at END Clothing, priced £69.

The Travel Bag

When you’re carting only one bag from airport to everywhere, it needs to be minimalist enough to pair with everything you might wear when you’re away.

Black leather is ideal – it’s robust enough to keep your stuff safe and works with everything from tailoring to pool sliders. It’s also unlikely to date anytime soon, which means you can invest in a travel companion who’ll accompany you for the next decade.

Lever Black Leather Weekend Holdall, available at Reiss, priced £295.

The Loose-Fit Trousers

Skinny jeans and airplane seats are a combination even President Trump would think twice about before OKing for CIA black ops sites. So size up to make things more comfortable.

“Loose-fit trousers are always needed when travelling as you never know when you could be sitting, walking or running from place to place,” says London. Just opt for lightweight cotton or linen to avoid overheating if you’re flying long haul.

(Related: In defence of wide-leg trousers, the polarising piece that you need to try)

ADPT Pleated Chinos In Wide Leg Fit, available at ASOS, priced £45.

The Lightweight Bomber Jacket

It’s tricky enough to predict our own weather. And since that holiday weather app doesn’t even recognise the town your AirBnB host promised was party central, layers will help you handle whatever your destination’s climate ends up being.

A lightweight bomber is the utility piece you can wear from day to night – zip under your suit jacket as a street style take on the waistcoat or shrug on over a crew neck after hours.

Acne Studios Selo Light Bomber, available at END Clothing, priced £419.