TSA Carry-On Flask

Grand Valley Flask

Grand Valley Flask

Ultra Slim Flask

91% of 100

You asked, and we listened.  Other slim flasks on the market are notorious for creating a "vacuum" where liquid will not come out without vigorous shaking - but not ours!  After countless requests for a slim flask that actually works, and after nearly one year of research and development, we are pleased to introduce the world's thinnest and most functional copper flask. This slim Jacob Bromwell® flask is as elegant as it is functional, and is crafted of pure copper with a machined screw-top for leak-free performance. The iconic kidney shape design allows the Ultra Slim Flask to be slipped discreetly and comfortably into one's suit pocket, back pocket or handbag.  No bulk, no bulge, and first-rate quality guaranteed.


Have a question or need assistance? - cs@jacobbromwell.com

— Product —


Weight: 1.5000 (lbs)
Material: Pure Copper
Dimensions: 3.5 x 3 x .5 (inches)
Crafted in: Vermont Workshop
Made by: Jacob Bromwell® Artisans
Care: Hand Wash Only
Usage: Everyday: City
Warranty: Lifetime Guarantee

— Key —


•Made in Small Batches
•Copper Screw Top
•Heirloom Quality
•Holds 3 Ounces
•Hand Soldered
•Made in USA

— Other Products —

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Not So Slim Facts

About Your Ultra Slim Flask
  • A Jacob Bromwell® product is an investment for life. Copper is sky-high on the commodities market today, and there are up to five red-blooded American workers involved in the creation of this copper masterpiece. Every step in our unique manufacturing process is still done by hand. It's a passion our company is unwilling to give up. See how it's made here at our Factory Tour!
  • A Jacob Bromwell® original design. Bromwell is the original manufacturer of these quality copper flasks! Other companies may imitate the original Bromwell design. None are made as well, and none have the history to back them up.
  • Holds roughly 3 fluid ounces. 
  • Made of pure, solid copper and features our proprietary hot-tinned interior. Considered to be a long lost art, hot-tinning is a manufacturing process pioneered by Jacob Bromwell® nearly 200 years ago. As a highly-skilled, labor-intensive process, we take sheets of tin and apply it through a process of heating directly to the copper. Hot-tinning makes each piece unique and historically-correct to the original design, and ensures your product is food and beverage safe.
  • 100% authentic and true to the original. Each piece is soldered with lead-free solder - not welded - for added authenticity.
  • It makes a great desk accessory item. In addition to its functionality, this prized possession also makes a great desk accessory item.
  • Copper will never rust. Copper is resistant to corrosion and will never rust. If left untreated, the copper finish will naturally oxidize and age beautifully. You can polish it up to restore its shiny finish, or let it earn a beautiful patina.
  • A little shaky with your liquor pours? We highly recommend adding our beautiful copper funnel so you can fill your flask without spilling a drop!
  • Product care: Hand wash only. Do not place in dishwasher.
  • Dimensions and weight: 3.5 x 3 x .5 (inches), .75 (pounds).
  • Minor cosmetic imperfections may occur. Small imperfections are a natural part of the handmade process and lend charm, depth, and individuality to each piece.
  • This product is guaranteed for life. Your purchase is backed by our 100% Lifetime Guarantee, so you can buy with confidence.
  • It's proudly made in America. Still Made in the USA, even after all these years. Buy American and save jobs.

"Do yourself a favor and grab this flask while you can. It's might just be the nicest flask ever made."

— Esquire —

— Authentic Customer —

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