US Navy Summer Flight Jacket | Type M-421A | Khaki - Size: XL

USN M-421A Summer Flight Jacket is a military history inspired flight jacket originally developed for US Navy and US Marine Corps aviators during World War II. Designed for lightweight protection, cockpit mobility, and thermal comfort in tropical conditions, it reflects the practical demands placed on naval pilots operating across the Pacific Theater. Rooted in early 1940s US Naval Bureau of Aeronautics specifications, the jacket translates authentic wartime flight gear into a modern heritage garment.

DETAILS:

The M-421A was issued as the standard summer flight jacket for Navy and Marine Corps pilots and represented an improved evolution of its predecessor, the M-421. Manufactured under wartime contracts between 1940 and 1944, it was developed in direct response to the inadequacy of heavier leather flight jackets in the heat and humidity of the Pacific.

Its construction prioritises breathability, freedom of movement, and aeronautical functionality. The point collar frames the neckline with clean simplicity, while the full-length zipper with a leather pull and TALON® hardware deliveres a streamlined front profile. The angled upper sleeve seam, triangular underarm panel, and back pleats allowes unimpeded arm movement in the cockpit. Two large buttoned flap pockets at the front waist provide generous, secure carry for essential gear, and remain the jacket's most visually defining feature. A horizontal seam across the lower back reflects the original pattern construction, while an inner chest pocket on the left side adds a discreet storage option. The straight, relaxed silhouette completes the purposeful, unfussy character of a classic naval flight jacket.

Today, the M-421A stands as a defining reference in the lineage of US Navy and US Marine Corps flight gear, bridging its wartime Pacific origins with contemporary heritage wear.

FEATURES:

• Point collar with full-zip front closure.
• TALON® zipper with cowhide leather zipper pull.
• Angled upper sleeve seam with triangular underarm panel for enhanced mobility.
• Back pleats for additional freedom of movement.
• Horizontal construction seam across the lower back.
• Two large front waist pockets with buttoned flap closure.
• Inner chest pocket on the left side.
• Combed 100% cotton twill, 340 g/m² (10 oz/yd²).
• Machine washable.

SIZING:

• Straight, relaxed fit with a clean, unfussy silhouette.
• Select your standard size.
• The versatile cut accommodates most body types.