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An MA-1 Bomber recut and conceived with our patented pivot sleeve. Supermarine Cotton structure on the outside, lush merino comfort on the inside.

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A spring weight version of Supermarine Soft Core Bomber. We’ve been wearing those bombers so much we realized we need to make a non-insulated version so we could keep rocking them in the springtime and in warmer climates.

Construction wise there ain’t much more to it, we took our classic bomber and redid it *without* the insulation. It still has the same Supermarine Cotton outer fabric for weather resistance and structure. It still has a beautifully soft and dry merino jersey lining for superior comfort. It still has our pivot sleeve construction for freedom of movement, although it is worth noting that we’ve gone from patent pending to just straight patented for that one. It still has split sides with two way zippers allowing you to open or close them for precise temperature regulation, or just because you like how it looks and feels. Tough American made nylon ribbing and substantively beautiful Swiss made metal zippers round out the package making for a killer welterweight jacket.
Supermarine Logo
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. 100% Cotton fibers 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. The dense weave combined with the premium fiber results in a fabric that is simultaneously tough and supple and it breaks in beautifully.

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 firehoses 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 this version of Supermarine® Cotton from Switzerland and it differs from the historical British version in two important ways, it is lighter and 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.

The lining is a merino knit (superfine 18.5 micron, 160 gram) for a beautiful soft feel and merino's incredible moisture and odor management properties.
  • SMB-1
  • Face: Supermarine Cotton (100% cotton, made in Switzerland)
  • Lining: Superfine, 18.5 micron, 160 gsm, merino jersey (100% merino wool, made in Australia)
  • Highly breathable
  • Windproof and highly water resistant
  • One-way front zip
  • Two-way X-open side zips for ventilation and access
  • Zip pocket on sleeve
  • Two large inside pockets
  • Pivot Sleeve construction for freedom of movement
  • Hanging loop
  • Fits true to size
  • Spot clean or dry clean only
  • Made in New York City
  • Sizing

    Fits true to size.

    Please refer to the table below for garment's exact measurements.

    Garment measurement illustration
    Garment measurements in inches, measured flat
    Size XS S M L XL
    Shoulder 20.5 21 21.5 22 22.5
    Length high shoulder to bottom 26 26.5 27 27.5 28
    Sleeve length CENTER BACK TO CUFF 36 36.5 37 37.5 38
    Body Measurement Illustration
    Body measurements in inches
    Size XS S M L XL
    Chest 34 36 38 40 42


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