Independent Portuguese label ISTO. has a knack for creating essential staples that are so versatile and easy to wear, it's hard to imagine our wardrobe without them. Just take its shirting range, for instance. Comprising eight meticulously crafted styles, it covers all bases, guaranteeing effortless elegance all year round. Sustainably made from organic and natural materials including linen and organic cotton, ISTO. shirts are made to fit perfectly and last longer. Scroll on for a closer look at each style.

Linen Shirt

Nothing beats the feeling of a crisp, airy linen shirt in the sweltering summer months. ISTO.'s version is, dare we say, perfect: it boasts a relaxed fit, buttonless collar, custom bio resin buttons and a sleeve length that's just right.

Camp Collar Seersucker Shirt

Seersucker is a quintessential summer fabric that's versatile, airy and elegant. Integrate it into your wardrobe in the form of this retro-style camp collar shirt, made from organic Portuguese cotton. It will take you effortlessly from beach to bar.

Oxford Shirt

ISTO.'s Oxford Shirt is made from a heavyweight organic cotton cloth that's durable yet light and breathable. It offers an ideal fit that's somewhere between classic and slim. In typical ISTO. fashion, not a single detail has been overlooked – from the cuffs to the buttons.

Camp Collar Linen Shirt

The linen version of ISTO.'s signature camp collar shirt is exactly the sort of garment we want to spend our entire summer in. Made in Portugal from 100% French linen, it's sturdy yet breathable, perfect for pairing with anything from soft tailoring to swim shorts.

Cotton Cashmere Flannel Shirt

Made from a luxurious blend of organic cotton and cashmere, this versatile shirt is ideal for year-round wear. Team it with chinos and loafers for an easy business-casual look or take it down a notch with jeans and leather trainers.

Lightweight Flannel Shirt

Made from 140 GSM organic cotton with a regular fit so that it hangs perfectly on the body, ISTO.'s Lightweight Flannel Shirt is a casual style saviour. Wear it in the summer months with chino shorts and trainers or dress it up with tailored separates.

Midweight Flannel Shirt

ISTO.'s 160 GSM organic cotton Midweight Flannel Shirt is perfect for layering under a sweater in the tricky transitional months. Choose from five pale neutral hues. This is one you'll reach for time and again.

Heavyweight Flannel Shirt

ISTO.'s Heavyweight Flannel Shirt is our go-to for the cooler months. Made from 190 GSM organic cotton, it's cosy and warm yet still breathable. Wear it as is or unbuttoned over a plain white tee.

Can't get enough of ISTO.? These are the summer staples you should add to your basket, pronto.