






ENDURE.
Some symbols don't just decorate. They anchor.
It's about the connection between the ocean and your story. An anchor, a whale tail, a shackle — each one means something. Choose the symbol that fits who you are.
Carry your heritage.
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
- Material: High-Density Dual-Core Marine Grade Nylon, engineered for superior abrasion resistance and long-term structural integrity.
- Hardware: 316L Stainless Steel signature clasp, featuring a brushed Gunmetal or Matte Black finish for a refined, tactical look.
- Construction: Heavy-duty, high-contrast tactical weave with triple-reinforced structural end-caps.
- Durability: 100% Saltwater-proof, sweat-proof, and UV-resistant (anti-fading technology).
- Warranty: UMI Lifetime Warranty.
Sizing
- Fit: Universal adjustable system (designed to fit wrists from 14 cm to 24 cm).
- Cord Diameter: 4 mm (A bolder, more rugged profile, engineered for high-performance durability)
Choosing the right bracelet size is essential for both comfort and style. At UMI Nautic, the perfect fit enhances your look and elevates your overall presence.
Adjustable bracelets — no size selection needed. The cord adjusts to your wrist with a simple pull, fitting wrists from 14 cm to 24 cm. Just add to cart.
Fixed size bracelets — use the guide below to find your perfect fit.

How to Measure Your Wrist
- Use a flexible tape measure, string, or a strip of paper.
- Wrap it around your wrist, just above your hand (below the wrist bone), where you normally wear your bracelet.
- Make sure it's snug, but not too tight.
- Mark where the ends meet and measure the length.
- Note your measurement in cm or inches and compare with the size chart below.
Bracelet Size Chart
| Size | Wrist (cm) | Wrist (in) |
|---|---|---|
| XS | 14.0 – 15.0 | 5.5 – 5.9 |
| S | 15.1 – 16.5 | 6.0 – 6.5 |
| M | 16.6 – 18.0 | 6.6 – 7.0 |
| L | 18.1 – 19.5 | 7.1 – 7.7 |
| XL | 19.6 – 21.0 | 7.8 – 8.3 |


Salt water. Sweat. Sun. Marine grade cord and premium silver hardware that never fade, tarnish or corrode.
Waterproof · Anti-tarnish · Hypoallergenic · Lifetime guaranteed

Every symbol has an origin. The anchor holds. The whale tail moves. The shackle connects. Each piece draws from the tools and language of the sea — worn on the wrist, carried for life.
Anchor · Whale tail · Shackle · Toggle.

Add any two pieces to your cart. Discount applied automatically at checkout. No code needed.
Velvet pouch · Authenticity card · 2 stickers · Free worldwide shipping.
Salt water. Sweat. Sun. Marine grade cord and premium silver hardware that never fade, tarnish or corrode.
Waterproof · Anti-tarnish · Hypoallergenic · Lifetime guaranteed
Every symbol has an origin. The anchor holds. The whale tail moves. The shackle connects. Each piece draws from the tools and language of the sea — worn on the wrist, carried for life.
Anchor · Whale tail · Shackle · Toggle.
Add any two pieces to your cart. Discount applied automatically at checkout. No code needed.
Velvet pouch · Authenticity card · 2 stickers · Free worldwide shipping.



12,000+ HAPPY CUSTOMERS WORLDWIDE.
FAQ
Are they water-resistant?
Yes. Crafted with premium nylon and high-durability elements, our pieces are made for daily wear. For maximum longevity, avoid constant contact with salt water, pools, or harsh chemicals.
Is there a warranty?
Yes. All pieces include a Lifetime Warranty against manufacturing defects, reflecting our commitment to durability. You have 7 days after delivery to request a return. The item must be unworn and in its original packaging.
What is the delivery time?
Orders are processed within 24–48 business hours.
Estimated delivery time is 5–7 business days, depending on your location.
All shipping details are provided during checkout and in your order confirmation email.
Can I track my order?
Yes. You'll receive a tracking link via email once your order is dispatched.























