Original: $85.00
-65%$85.00
$29.75The Story
The Lot JG-31 Tweedy Prison Cap pulls from a very specific piece of American history, referencing the caps issued to prisoners at the Portsmouth Naval Prison during the 1930s and 1940s. It’s a simple, utilitarian design, but one that carries a lot of quiet character, especially when executed with the level of care John Gluckow is known for. This isn’t a novelty reproduction, it’s a thoughtfully balanced cap that feels authentic without being costume-like.
Made from a wool-blend tweed, the fabric adds texture and visual depth while remaining soft and wearable. The six-panel construction and full brim give it a classic profile that works just as well with workwear as it does with cleaner, pared-back outfits. We love the immediate upgrade this gives to any outfit.
- 90% wool / 10% nylon tweed
- Six-panel construction
- Full brim
- One size
- Head circumference: 21.6"
- Crown height: 4.7"
- Brim length: 2.6"
- Made in Japan
Fit Notes: These are made with a one-size-fits-most denotation. That fit with a slightly shallow brim. They should fit well on medium-large head sizes.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
The Lot JG-31 Tweedy Prison Cap pulls from a very specific piece of American history, referencing the caps issued to prisoners at the Portsmouth Naval Prison during the 1930s and 1940s. It’s a simple, utilitarian design, but one that carries a lot of quiet character, especially when executed with the level of care John Gluckow is known for. This isn’t a novelty reproduction, it’s a thoughtfully balanced cap that feels authentic without being costume-like.
Made from a wool-blend tweed, the fabric adds texture and visual depth while remaining soft and wearable. The six-panel construction and full brim give it a classic profile that works just as well with workwear as it does with cleaner, pared-back outfits. We love the immediate upgrade this gives to any outfit.
- 90% wool / 10% nylon tweed
- Six-panel construction
- Full brim
- One size
- Head circumference: 21.6"
- Crown height: 4.7"
- Brim length: 2.6"
- Made in Japan
Fit Notes: These are made with a one-size-fits-most denotation. That fit with a slightly shallow brim. They should fit well on medium-large head sizes.


