Equator Shirt

Engineered with 10 concealed vents, it’s designed for heatwaves.


Model is 5ft 11 / 180cm with a 38 inch / 97cm chest, and wears size Medium.

  • Ultra lightweight weighing 167 grams
  • Made with silk-like cotton from the Nile Delta
  • Advanced ventilation system with 10 concealed air vents

Home to some of the hottest and most humid places on the planet, the equator carves through dense tropical jungles, warm seas, and crowded cities. Instead of seasons or temperature changes you’re more likely to be hit by a wall of heat, sun, rain and humidity. But as global temperatures rise and climate zones shift, designing clothing for the equator is like designing for our future.

So the Equator Shirt is built to keep you comfortable in all 40,000km of one of the most extreme environments we currently inhabit. The shirt starts with one of the lightest and softest fabrics on the planet, a rare, silk-like cotton from the Nile Delta. We then turned this into a phenomenally lightweight technical shirt by adding stretch, strength, UV protection, and bioresin buttons anchored on military tape.

And with every detail designed to keep you cool, we engineered the shirt with an advanced ventilation system – 10 concealed air vents built with laser cutting work together like built-in air-con.

Technical Details

Material made in Italy: 72% cotton, 24% polyamide, 4% elastane
Shirt weighs 167 grams
Two way stretch throughout the shirt
10 concealed air vents
8 air vents across the back reinforced with bartacks
2 perforated chest air vents concealed inside chest pockets
2 zipped chest pockets with lockable zippers
All seams are twin needle stitched with two lines of stitching to double the strength
6 heat resistant buttons made from bioresin
All buttons are anchored on their own heavy duty woven polyester military tape with reinforced stitching
Reinforced hanging loop at the back neck
Short pre-rolled sleeves reinforced with bartacks
Material weighs 95g/m2
Machine wash 40°C
Constructed in Portugal
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We start with the softest cotton from the Nile Delta

Life at the equator offers us a glimpse of our future – a world of non-stop sun, heat, humidity and rainstorms. So we’ve built the Equator Shirt to equip you for it. To build a shirt that can work in all 40,000km of the equator we started with a world-class base material – a rare cotton called Karnak Menoufi. One of the lightest, softest fabrics on the planet, Karnak Menoufi is a silk-like cotton that’s only found in the Nile Delta, and only grows in the years when the rain, soil and wind conditions are perfect.

We turn cotton into a high performance fabric

While Karnak Menoufi is already extremely soft and robust, we’ve added durability and stretch by combining the cotton with elastane and an ultrafine nylon in Italy. Together the combination is so soft and lightweight that it has to be spun and woven with the same techniques and on the same looms that are used for silk. The result is an advanced, abrasion resistant material which feels almost silk-like next to your skin.

Ultra lightweight at just 167 grams

As global temperatures rise and climate zones shift, clothes have to respond. Weighing just 167 grams, the Equator Shirt is the most technical lightweight shirt ever built, and less than half the weight of our Planet Earth Shirt. Built for the heat, the Equator Shirt is highly breathable, ultra lightweight and packable – so it’s perfect for any adventure. Whether it’s on your back or in your backpack you’ll never notice it’s there.

10 concealed air vents work like in-built air-con

We’ve built 10 concealed air vents throughout the shirt to cool you down, with two different methods of engineering. Designed for hot, humid and arid environments, each vent opens and closes either with body movement or with zip closures. And we’ve put them in the places you’ll need them the most – across your back and on your chest.

Two chest pockets with hidden vents

The two chest pockets are built with angled lockable zippers. Inside each of the pockets are hidden vents for when you need to cool down. Simply unzip each pocket to reveal perforated laser cut panels that will create multiple air streams. When you’re moving fast this will channel any air from the outside directly towards your chest to cool you faster.

Air-con for your upper back

Another 8 air vents are positioned across your upper back. These are engineered to stay open and bring constant airflow. Two layers of fabric overlap and are securely fixed with bartacks. It means they won’t blow open and your skin will stay protected, but the air can flow in.

Two way stretch and twin needle stitched for performance

The last thing you want when you’re pulling any extreme or repetitive move in the heat is resistance from your kit. The Equator Shirt has 2 way horizontal stretch, so whichever way you stretch, pull or turn, it will simply go with you. We’ve also used twin needle stitching on every seam, which is two lines of stitching instead of one to double the strength.


Every button on the shirt is made of buffalo imitation bioresin – a natural, non-toxic and water-based material we’ve produced by combining plant and vegetable waste with a polyester resin used by the aerospace industry. Lightweight and heat resistant, all the buttons are sculpted with a highly polished 30 degree taper towards the edges to make them easy to slip into place.

Free-floating buttons anchored on military tapes

Even the way the shirt buttons up has been engineered to work with sweaty hands and hostile conditions. Rather than being sewn onto the shirt, the buttons on the front of the shirt have all been threaded onto a high-strength woven polyester tape that runs the shirt’s entire length. The tape is then stitched onto reinforced panels above and below each button. The construction allows the shirt to stretch and flex with you, as each button is free to slide 2 centimetres up and down its section of military tape.

Size + Fit

The Equator Shirt has a regular fit.

Fits chest 83 - 90 91 - 98 99 - 106 107 - 114 115 - 122 123 - 130
Fits waist 71 - 76 76 - 81 81 - 86 86 - 91 91 - 96 96 - 101
Fits chest 33 - 36 36 - 39 39 - 42 42 - 45 45 - 48 48 - 51
Fits waist 28 - 30 30 - 32 32 - 34 34 - 36 36 - 38 38 - 40