Forstner Komfit JB Wide Straight Ends Stainless Steel Mesh Watch Bracelet

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Forstner's expandable Komfit JB (JB Champion) stainless steel mesh watch bracelet was one of the only bands sanctioned by NASA for use on manned space missions. It was worn by astronauts throughout the Mercury, Gemini, and Apollo programs, and even made it to the surface of the moon.

Now, after a long hiatus (during which only high-priced vintage models could be sourced), Forstner has improved and reissued this classic. The wide version of the Komfit has all the features that popularized the bracelet with NASA, and is identical to the original -- with the width increased to more contemporary proportions.

  • 18mm-wide square-patterned central mesh section.
  • Beautifully designed straight bar universal fit end pieces.
  • Spring-loaded ends fit 18mm, 19mm, 20mm, 21mm and 22mm watch lugs.
  • Forward-facing clasp.
  • Easily adjustable in micro-increments for the perfect fit.
  • Offered in two lengths: Original and Regular.
  • Original: once worn by astronauts over their space suits; equivalent to a "long" length. Fits wrists 7" - 10". 
  • Regular: fits small to medium wrists (5-3/4" - 7"). 
  • For 7" wrists either length will work, but the Original may provide the best look.
  • 2mm thick.
  • Accommodates spring bars up to 1.8mm (included).
  • New to Forstner bracelets? Here are some tips on using and caring for your Komfit.

Q: Do you sell watch bands for women?
A: We do! Many of our short-length straps are the perfect size for women.

Q: Can you suggest a strap that looks amazing with my watch?
A: Unfortunately, because the range is so vast (and personal taste is subjective), we cannot advise regarding aesthetic suitability for specific models and styles of watches.

Q: I have an Apple watch. Will any of your straps work for me?
A: Sure! Our handy Apple watch band adapters accommodate most 22mm straps.

Q: Are spring bars available?
A: Yes, for each strap that is not already integrated with quick-release spring bars, we include one free pair of strong, seamless double-flange stainless steel bars.

Q: What strap size do I need?
A: To determine your size, use a metric ruler to measure the internal distance (in millimeters) between the lugs of your watch.

Q: My Bonetto Cinturini deployant strap is too long. Can you help?
A: Of course! See our Bonetto Cinturini sizing guide for cutting instructions.

Q: Do you offer international shipping?
A: Yes! Visit our Shipping & Returns page for more information.

Q: May I return my purchase?
A: Holben's Fine Watch Bands accepts returns of unworn, undamaged merchandise for refund or exchange within thirty days of purchase. Learn more on our Shipping & Returns page.

Need help with sizing?
  • Inspect the underside of your current watch strap for width indicators.
  • Measure the space between your watch lugs (in millimeters) using a metric ruler.
  • Research the specifications of your watch model on the manufacturer's website.
Shopping for your Apple watch?

Our stainless steel adapters enable the use of virtually any 22mm watch band with Apple Watch models 1-8, SE and Ultra, and are compatible with standard or quick-release spring bars.

Shipping & Returns

Not to brag, but Holben's is famous for our fast shipping!

United States deliveries:

All domestic shipping options include tracking.

FREE USPS Ground Advantage shipping (3-5 business day transit time) for orders over $39.
$4.95 USPS Ground Advantage shipping for orders up to $39.00.
$8.95 USPS Priority Mail (2-4 business day transit time).
$23.95 USPS Priority Mail Express (1-2 business day transit time).

International deliveries:

Quickly-dispatched USPS First Class International shipping for one flat fee of $16.95, regardless of number of items purchased.

Orders shipped outside of the USA may be subject to customs or import fees upon arrival in the destination country. Payment of any import duties, fees or taxes is the responsibility of the customer. Contact your local customs office for information regarding potential charges.

Returns & Exchanges

Holben's accepts returns of unworn, undamaged watch straps or accessories for refund or exchange within thirty days of purchase. (To ensure that items remain in original condition, please confirm suitability before fastening to your watch or wrist.)

All product packaging (bags, tags, cases, etc.) must be unaltered and returned with each item. Items without original packaging will be refused. Items that have been worn, resized, damaged or otherwise modified (including exposure to cologne, tobacco smoke, household air fresheners or other odors) will not be accepted.

Orders must be packed in a padded envelope or small box, and shipped via USPS with delivery confirmation. (Couriers such as DHL and UPS will not deliver to PO boxes.)


Please ship all returns to the address below, with a note stating your name, date of purchase and reason for return.

Returns Department
PO Box 10853
Bainbridge Island, WA 98110

We are happy to help with returns and exchanges. If you have any questions, please contact us.

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