Launched in the 1950s by the US military, the MA-1 bomber jackets were designed to replace the B-15 jackets. These outerwear pieces came with several design changes, including a reversible orange interior and thick nylon material.
But are MA-1 bomber jackets warm? In this article, we’ll answer this question by walking you through every feature that makes an MA-1 flight jacket the top choice for colder seasons. We aim to help you make the right buying decision.
The Nylon Shell Material Makes a Difference
One of the main features that makes the MA-1 series a warm jacket is the outer shell made from durable nylon. The heavy nylon twill consists of at least 36 individual fibers woven into a single yarn. It’s so densely woven with 240 vertical threads and 80 horizontal threads per square inch.
The main benefit of this nylon material is that it provides some level of water resistance against light rains and spills. In addition, it makes the jacket windproof, acting as a protective shield during colder seasons. According to reports, these jackets can provide warmth when operating in temperatures between -10 and 10 Degrees Celsius.
Interlining for Maximum Warmth
The MA-1 aviator jacket did away with the removable or foldable collar that was popular with the B-15 series. It comes with a knit collar instead of the bulky shearling or fur material to prevent the jacket from snagging on a parachute harness. Sadly, some people may find this design to limit the jacket’s warmth and comfort levels.
Thankfully, the MA-1 jacket introduced an interlining between the outer shell and the lining. This design provided more insulation to keep the pilots warm at high altitudes. The interlining is made from wool and cotton fabric for maximum warmth and comfort.
Convenient Wing Flap Design
Another anti-cold feature in the MA-1 jacket is the internal wind flap or storm flap. This wind flap runs behind the front zipper, vertically down inside the jacket. The strip of fabric is designed to prevent cold air and moisture from entering the jacket through the zipper teeth. While inside the cockpit, the wind flap traps in body heat at high altitudes. Most modern options have zigzag stitching to prevent interference with the interlining.
Synthetic or Wool Interlining
The original MA-1 aviator jacket featured a wool interlining for extra warmth. However, the US military upgraded this design in the 70s to introduce a synthetic polyester fiberfill. This update made the jacket lighter and more water-resistant without sacrificing warmth and comfort. The interlining sits between the outer nylon shell and inner lining to trap body heat and prevent cold air from seeping in.
Layer-Friendly Fit
A traditional MA-1 flight jacket is roomy and can easily accommodate internal layering. You can throw these jackets over a thick hoodie or a sweater for added warmth during winter and other colder seasons.
However, the jacket’s baggy fit can gather “puffiness,” whereas a slim-fit option can feel uncomfortable and restrictive with thicker hoodies. In addition, the heavy nylon twill and thick interlining provide built-in warmth, so you may not really need heavy layering beneath it.
Conclusion: Is an MA-1 Bomber Jacket Warm?
The short answer is yes: MA-1 flight jackets are warm outerwear pieces that can effectively shield you from cold winds and snow. This jacket comes with targeted designs such as the thick nylon twill, synthetic interlining, and wind flaps to withstand the coldest seasons. Just remember to avoid over-styling it to maintain its original military-style aesthetics.
