Keeping cool in the heat: lightweight clothing that doesn’t look like pyjamas

There’s a particular trap that catches a lot of men once the temperature climbs: comfort starts to matter more than anything else, and before you know it you’re reaching for whatever’s loosest and lightest in the wardrobe. The trouble is, “loosest and lightest” often ends up looking like something you’d wear to bed, not to the shops or out for lunch.

It doesn’t have to be a choice between sweating through a proper shirt or shuffling round in jersey loungewear. The right fabrics and cuts give you both: genuine breathability and a look that still says you’ve made an effort.

Shirts that breathe without looking baggy

A short-sleeve shirt is still a shirt. Collar, placket, proper buttons, the works. That structure is what keeps it looking smart even when the fabric underneath is doing all the work to keep you cool.

The Men’s Croyde Seersucker Short Sleeve Shirt (£19, buy 2 for £32) is built for exactly this. Seersucker’s puckered weave holds itself slightly away from the skin, so air moves underneath it rather than trapping heat against you. It’s one of the oldest tricks in hot-weather dressing for a reason.

If you want something with a touch more polish, the Men’s Poplin Short Sleeve Shirt (£21) has a crisper finish that works just as well at a barbecue as it does meeting friends for coffee. And if you’d rather stick with a name you already trust, the Double Two Oxford Men’s Shirt (from £39) gives you that same lightweight ease in a more traditional Oxford weave.

Polo shirts: the middle ground

When a full shirt feels like too much but a t-shirt feels like too little, a polo does the job. It still has a collar, which matters more than people realise. A collar reads as “dressed,” even paired with shorts.

The Men’s Hamilton Knit Polo Shirt (£24) is knitted rather than the usual stiff pique, so it moves and breathes more like a jumper than a t-shirt. For something with a bit of stretch and give, the Men’s Turnberry Stretch Polo Shirt is currently £10, down from £20, which makes it an easy one to try.

If you remember our piece on Lambretta’s mod heritage, the Lambretta Twin Tipped Polo Shirt (£27) is where that history meets a genuinely practical summer piece. Tipped collar, proper cotton, and a brand with sixty years of getting this right.

Trousers and shorts that don’t look like pyjama bottoms

This is where the pyjama fear is strongest, and it’s the easiest one to put to rest. The difference between a jersey loungewear bottom and a proper pair of trousers isn’t the fact that the waist is elasticated. It’s everything else.

The Men’s Lightweight Linen Blend Trousers – Elasticated Waist (£29) keep a tailored leg line and a pressed crease, so even with the easy waistband, they read as trousers, not sleepwear. Linen blend breathes the way cotton jersey never can, and the structured cut is what makes the difference to anyone glancing at you across the garden.

For warmer days still, the Linen Blend Active Waist Shorts (£25) carry the same idea into shorts: still smart enough to answer the door in, still cool enough for a long afternoon outside.

The rules that actually separate smart-casual from loungewear

A few things to look for whenever you’re choosing a “comfortable” piece for summer:

A collar and a button placket will always look more dressed than a pullover jersey neckline, whatever the fabric underneath is doing.

Natural-feel fabrics like linen blend, seersucker, and poplin hang and move differently to the shiny, clingy synthetics used in most loungewear. Your eye picks up on this even before you’ve worked out why something looks “off.”

A waistband with some structure to it, even an elasticated one, sits differently to a drawstring. Structure is what keeps the silhouette of a proper trouser.

Stay cool, stay dressed

None of this means more effort. It means choosing pieces built to do both jobs at once. Our Summer 2026 Collection is full of exactly this kind of clothing, shirts, polos, and trousers that keep you comfortable without making you look like you’ve just got out of bed.

Use code M273FD for free delivery on your order, and see the full range while the warm weather lasts.