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Iron Heart x Simmons Bilt Blattwerk Work Jacket - Brown

£1,161

IHSB-WJ
Size: Please select size
No quibble 28 day return policy Discuss on Forum See what sizes the crew wear
The Environmental award-winning Blattwerk® horsehide leather is produced using olive leaves as a by-product of the olive harvest, this new tanning agent is not only 100% sustainable but also gently refines the leather giving it a natural warm velvety feel. The techniques used to produce Blattwerk® horsehide is a mild process and leaves a subtle olive fragrance, authenticating the origins of its biological origins, no use of acid sulphur or salts are required to produce Blattwerk®, it is pure, natural and sustainable and also contributes to the local economy where the olives are grown. Blattwerk® Horsehide is treated with genuine Beeswax to protect it from dirt and environmental influences.

Product Description

Made by Simmons Bilt

Premium leather jackets and shirts, handmade in Scotland by Simmons Bilt

Features & Construction

- Blattwerk® horsehide leather, tanned using olive leaves as a by-product of the olive harvest
- This tanning agent is 100% sustainable and also gently refines the leather giving it a natural warm velvety feel
- Two ripstop-lined chest pockets with Talon zippers
- One internal gun pocket
- Handwarmer pockets lined with navy cotton
- Universal main zipper
- Ribbed storm cuffs inside sleeves
- Vent holes under armpits
- Olive cotton lining - colour may vary between runs. Please get in touch if you have a preference
- D ring cinches at waist

Model Sizing

Model Sam P wears L

Leather Care

Blattwerks Horsehide

- Horsehide is a dense, durable leather known for its toughness, wind resistance, and ability to break in over time without losing structural integrity. Compared to cowhide, it has a tighter grain and firmer feel, making it well-suited to outerwear like motorcycle and workwear jackets


- Over time, horsehide will develop character through creasing, darkening, and subtle patina. Unlike Shell Cordovan, it has a more textured surface and is less prone to fine scratching, though sharp abrasives can still scuff or gouge the finish


- Horsehide is typically treated during tanning with oils and waxes, giving it a degree of water resistance. We recommend conditioning only when the leather shows signs of dryness — about once or twice a year depending on wear and climate. Use a neutral leather conditioner or balm sparingly, applying a small amount and buffing thoroughly. Avoid over-conditioning, as it can soften the leather excessively and affect its structured shape


- For cleaning, start with a soft, dry cloth to remove surface dust. For more thorough cleaning, use a slightly damp cloth with a drop of mild soap, and gently wipe down the jacket. Never soak the leather. If the jacket gets wet, blot gently and allow it to naturally dry at room temperature, away from heat sources. Once dry, a light buff with a soft cloth will restore its finish