Double Helix - Classic 1920s Seal Brown

Where it’s made: Made in Japan
What it’s made from: 1.3–1.5 mm vegetable-tanned horsehide with a semi-aniline finish, cotton lining
Fit description: Regular, comfortable fit with a slightly cropped body, inspired by 1920s leather sports jackets

The Double Helix Classic 1920s Seal Brown takes inspiration from early American leather sports jackets, a style originally designed as comfortable everyday outerwear rather than specialised sporting equipment. Made in Japan from substantial vegetable-tanned horsehide, the jacket combines traditional craftsmanship with the distinctive proportions of the 1920s.

The leather features a rich, dark Seal Brown colour with a semi-aniline finish that preserves the natural grain and character of the hide. Initially firm and structured, the horsehide gradually softens and moulds to the body with wear. As the leather develops creases and patina, the brown colour gains more depth and variation, creating an individual appearance over time.

The design features a rounded shawl collar, a buttoned front with genuine buffalo horn buttons and two large patch pockets with buttoned flaps. Adjustable brass side buckles allow the waist to be tightened, while buttoned cuffs and a cotton lining complete the traditional construction.

The slightly cropped silhouette reflects the proportions of original 1920s sports jackets, sitting naturally above the hips and working particularly well with high-waisted trousers. The regular fit provides comfortable room through the body without feeling excessively loose.

Jonas is 183 cm / 75 kg and wears size 44 for a comfortable fit.