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Supermarine Heavy Shirt

Supermarine Heavy Shirt

Lighter than most jackets, heavier than most shirts and made with 100% Supermarine® Cotton. Water resistant and windproof, rugged and ready to go no matter what the weather throws at you.

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Half jacket, half amazing, but around here we just call it the Heavy Shirt. Made with a water resistant and windproof Italian version of our Supermarine® Cotton. Rugged and well pocketed, this shirt doesn't mess around. Rock it as a light jacket for summer evenings, a heavy shirt in the spring and fall and as an extra layer in the winter.

Two front box pleat pockets with button flap and hidden inside pockets make sure you can carry what you need. Dyed to match custom Corozo buttons and sewn up into our Pivot Sleeve for sharp looks and freedom of movement.

Like all Supermarine® Cotton, this stuff makes you wonder why on earth you've been wearing Gore-Tex and waxed cotton all these years. It's not waterproof to government spec, but you can walk around for an hour in a storm and stay dry. Perhaps more importantly though it looks and feels great.
The secret to the future, they say, is hidden in the past. Supermarine® Cotton is a 21st century edit to a nearly forgotten World War II fabric. You can think of it as the pinnacle of cotton technology, extremely breathable, highly water resistant and completely windproof. It can only be made using the longest staple Egyptian cotton fibers. They are woven together in a complex weave that swells up and seals when exposed to water. The result is a beautiful cloth that we think is the best rainy day fabric around.

For decades it's been obscured from the public, kept alive mainly by demand from a few Air Force units, Antarctic explorers and funnily enough, bird watchers; all who have different understandings of its unique properties. Supermarine® Cotton stays comfortable under pressure and there is none of that sweaty/clammy feeling you get with GoreTex and other synthetic "waterproof-breathable" fabrics. It isn't technically "waterproof" by government standards but you can stay dry for hours in the rain wearing it. It's woven from the longest staple Egyptian cotton so it breaks in beautifully. The dense weave combined with the premium fiber results in a fabric that is simultaneously tough and supple.

Historically this fabric is an updated version of a fabric the British invented in World War II to keep their pilots alive in the North Sea if they happened to get shot down. It was later used by the British Navy, in Antarctic exploration and by Edmond Hillary during the first ascent of Mount Everest. It was even used to make fire hoses and eventually found its way into high-end hiking gear. Since it requires a very dense weave of the most expensive cotton fibers on the market, it never quite broke through into the mainstream and with the advent of GoreTex it faded from the general marketplace. Bird watchers still sought it out since it's significantly quieter than the loud synthetic fabrics that took over, while Antarctic teams prized it for its amazing windproof quality. The main customer of the past few decades however has been various Air Forces who understood just how superior a fabric it is, and are willing to pay for it.

We source our Supermarine® Cotton from Switzerland (where it goes by the tradename ETAProof®) and it differs from the historical British version in one important respect, it is treated with a premium durable water resistance (DWR) that is not wax-based. The water resistance in the historical formulation comes from two factors, the denseness of the weave and the fact that cotton fibers swell up when exposed to moisture. Adding the DWR treatment into the mix results in a significantly superior rain repellant and breathable fabric that far outclasses both the synthetic "waterproof-breathable" fabrics of the world and the heavy, clammy Barbour-style waxed cotton. It looks better, wears better and is dramatically more comfortable.

We've been testing this stuff extensively over the past year and we keep on thinking we've stumbled upon a little bit of magic. We made button down shirts and walked out into torrential downpours without a jacket or umbrella. We've done hours of laps in Prospect Park during thundershowers wearing the same shirt and stayed dry. We've taken it out into 100% desert heat to see how well it breathes. We challenged our bike messenger friends to beat it up on the road. More important than all that though was the fact when we headed out of the house, we almost always reach for a Supermarine® Cotton shirt or parka, not because we wanted to test it, but because we wanted to wear it.
  • Supermarine Heavy Shirt
  • 100% Cotton woven in Italy
  • 160gsm
  • Highly water resistant and super breathable
  • Highly wind resistant
  • Two front box pleat pockets with button flap
  • Hidden inside chest pocket
  • Rear megastash pocket
  • Pivot Sleeve construction for freedom of movement
  • Custom dyed to match Corozo buttons
  • Single needle stitched with flat-felled seams throughout
  • Fits true to size, consider sizing up for an overshirt fit
  • Dry clean only
  • Made in New York City
  • Sizing
    Fits true to size, a tailored medium cut. Consider sizing up for an overshirt fit.

    Size Chart (in inches)
    X-Small Small Medium Large X-Large
    Chest Size 34 36 38 40 42
    Body Length 28.5 29 29.5 30 31
    Sleeve Length (from center back) 32 33 34 35 36