
The bracelet looks even better in person. The details are subtle, the fit is perfect and it has become part of what I wear almost every day.







Some hardware had a job before it had a look.
The anchor holds. The shackle connects. The toggle releases under load and not before. Every piece here comes off a boat somewhere — choose the one that fits what you do.
Carry the edge.
The ENDURE stands as the definitive pillar of the HARBOUR collection, engineered for those who embrace the raw intensity of the open sea. While others retreat, the ENDURE thrives, drawing inspiration from the steadfast resilience of deep-sea rigging and the iron grit of explorers who demand more from their gear. Featuring a bold, high-contrast tactical weave and our signature reinforced architecture, it is more than an accessory—it is a testament to the mental toughness required to weather any storm and the physical strength to emerge stronger.
Crafted with a heavier, more authoritative presence, this bracelet masterfully merges the raw power of the ocean with the surgical precision of modern maritime engineering. It is the personification of UMI’s "unbreakable" philosophy: a tactical guardian within the HARBOUR sanctuary that doesn't just survive the journey—it thrives in it.
Technical Specifications
Sizing
We opened with 1,500 pieces and no second lot planned.
Every bracelet ships with a card carrying its number in the run. 0001 exists once. So does 1500. When the last one goes out, the series is closed and the next one starts at full price.
Marine-grade nylon cord, 316L stainless hardware — the same grade used on deck fittings. Lifetime warranty against manufacturing defects.


Built for salt
Marine-grade nylon cord, tight-weave, tested against salt, sweat and sun. 316L stainless hardware — the same grade used on deck fittings, because it is the only one that survives salt water without pitting.
Waterproof · Anti-tarnish · Hypoallergenic · Lifetime warranty

Every symbol has a job
The anchor holds. The shackle connects. The toggle releases under load and not before. Every piece draws from hardware that had to work before it had to look like anything.
Anchor · Shackle · Toggle · Cleat

Your number, on the card
Series One runs 0001 to 1500. Your number is printed on the authenticity card in the box — not generated, not reused. When the lot closes, Series Two opens at full price.
Numbered card · Series Box from two pieces · Free worldwide shipping

Built for salt
Marine-grade nylon cord, tight-weave, tested against salt, sweat and sun. 316L stainless hardware — the same grade used on deck fittings, because it is the only one that survives salt water without pitting.
Waterproof · Anti-tarnish · Hypoallergenic · Lifetime warranty

Every symbol has a job
The anchor holds. The shackle connects. The toggle releases under load and not before. Every piece draws from hardware that had to work before it had to look like anything.
Anchor · Shackle · Toggle · Cleat

Your number, on the card
Series One runs 0001 to 1500. Your number is printed on the authenticity card in the box — not generated, not reused. When the lot closes, Series Two opens at full price.
Numbered card · Series Box from two pieces · Free worldwide shipping
Real pieces, real wrists. Photos sent in by the people who bought them.

The bracelet looks even better in person. The details are subtle, the fit is perfect and it has become part of what I wear almost every day.

Exactly what I wanted. Understated enough to wear every day but distinctive enough that people actually notice it.

Very impressed by the finish. It feels solid on the wrist and the maritime details give it character without making it look excessive.

I have worn mine almost every day since it arrived. Comfortable, easy to combine with a watch and the proportions are just right.

This is one of those pieces that works with almost everything. I wear it with linen shirts, polos and even more formal outfits.

The nautical inspiration is what caught my attention, but the quality is what surprised me. It feels much more premium than I expected.

Clean design and very comfortable on the wrist. I like that it has personality without trying too hard. Already thinking about getting another one.

The photos made it look good, but it is even sharper on the wrist. Minimal, masculine and easily one of my favourite accessories now.
The series closes 30 September. Series Two opens at full price.
No. The hardware is 316L stainless — marine grade, the same specification used for deck fittings and rigging, chosen because it resists salt-water pitting rather than just resisting rust in air. The cord is a tight-weave marine nylon rated for constant wet and dry cycling.
Both are covered by our lifetime warranty against manufacturing defects.
Adjustable pieces need no size selection — the cord pulls to fit wrists from 14 cm to 24 cm.
For fixed sizes, wrap a strip of paper around your wrist just below the wrist bone, mark where the ends meet, and measure. The chart on each product page maps that measurement to a size.
Orders are processed within 24 to 72 hours. Estimated delivery is 6 to 12 business days to Europe.
You get a tracking link by email as soon as your order is dispatched.
Our first production lot: 1,500 bracelets, numbered 0001 to 1500, with the number printed on the card inside each box.
The lot closes on 30 September. Series Two opens after that at full price.
Yes — 30 days from delivery, unworn and in its original packaging. Write to hello@kaiamaritime.com and we send the instructions.