





Navy Sailcloth Slim Strap for De Bethune







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You can now enjoy a Sailcloth strap on your De Bethune watch without the wait! These ready-stock straps are sporty, stylish, and offer versatility for daily or active wear.
Our Sailcloth, with its water-resistant, fray-resistant qualities and visual appeal, is a perfect material match for De Bethune’s blend of technicality and elegance.
The straps match OEM taper dimensions so you can use your original buckle. In fact, we’ve chosen to sell these straps without buckles. For watch-specific designs like this, many collectors prefer to reuse OEM hardware, especially when it’s as distinctive and well-made as De Bethune’s.
We also made a deliberate choice not to include quick-release spring bars, as the knobs could press into the skin and cause discomfort, especially with articulating lugs like those on the DB28.
Refer to the "What Watches Does This Fit?" section below to ensure your De Bethune watch is compatible with these straps. We currently do not offer a 24mm lug width option, so these straps are not compatible with the DB25 Perpetual Calendar 44mm.
Please note that Delugs is not affiliated with any watch brands such as De Bethune. Our straps are developed independently by Delugs. All intellectual property rights related to watches, visuals, trademarks, names, and logos belong to their respective watch brands.
Specifications
What Watches Does This Fit?
What's Included



Strap Length Guide
There are two sides per strap, which we refer to as the long end and the short end, which are represented by C and D respectively in the diagram below.
Our handcrafted leather straps come in 3 different lengths.
- Small (C: 105mm, D: 65mm)
- Medium (C: 115mm, D: 70mm)
- Large (C: 125mm, D: 75mm)
A quick way to decide on the length to get is based on your wrist size. Here is the general recommendation (if you are between sizes, we recommend to size up):
- Wrist size of 14.5cm - 17.0cm: Small
- Wrist size of 16.5cm - 19.0cm : Medium
- Wrist size of 18.5cm - 21.0cm: Large
If you need a strap that is shorter than Small (105/65), or longer than Large (125/75), you can always have the strap custom made.

Measurements | Description | S | M | L |
---|---|---|---|---|
A | Lug width | Varies by lug width (see product listing) |
||
B | Buckle width | |||
C | Long strap length | 105mm | 115mm | 125mm |
D | Short strap length | 65mm | 70mm | 75mm |
E | Distance to middle hole | 63mm | 71mm | 81mm |
F | Distance between holes | 6mm | ||
G | Size of holes | 1.8mm | ||
Number of Strap Holes | 7 | 7 | 7 |
Hope this quick guide helps! Finding the perfect length to get can be a little bit more complicated, as it also depends on the lug-to-lug distance of your watch, and even the shape of your wrist. For a more detailed guide on sizing, please check out this page.
Find Your Lug Width
If you're looking to purchase a strap for your watch, you will need to know the lug width of your watch. Lug width refers to "A" in this schematic below.

There are two ways to find out the lug width of your watch.
- Firstly, you can Google "<watch brand and model> lug width" and see if there is an answer from the brand's website, or some other websites.
- Alternatively, you can simply take a ruler and measure the lug width directly on your watch.
Lug widths are typically in whole numbers, and while the most common lug widths are between 18-22mm, they can go down to 8mm or up to 32mm even. Our ready stock straps are available in 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 24mm and 26mm. If you need other lug widths, you can have it custom made.
You will then need to purchase a strap of the same lug width. For example, if your watch has a lug width of 20mm, you will need to purchase strap with a width of 20-16.
Note: Our Widths typically have two numbers, for example 20-16. The first number (20) refers to the lug width ("A" in the schematic above). The second number (16) refers to the buckle width ("B" in the schematic above). You just need to ensure that the first number matches the lug width of your watch.
Water-Resistant
Scratch-Resistant
Pliable
The strap is very soft and flexible, and is extremely comfortable with zero break-in required. This is owing to both the type of material used, and the overall construction of the strap.
Rubber Lining
The strap is crafted with a rubber lining, for increased sweat resistance while worn on the wrist.
No QRSBs
Quick release spring bars are not included with this strap. Please use your OEM hardware.
No Buckle
A buckle is not included with this strap. Please use your OEM hardware.