For watch straps, two numbers such as 20/16 stand for the lug width and the clasp width in millimeters :

→ 20mm indicates the lug width , i.e., the width of the strap where it attaches to the watch . Always important!

→ 16mm Specifies the clasp width , i.e., the width of the strap at the point where the pin or folding clasp is attached. Only of limited importance if you want to use your watch's original clasp.

In general, all of our leather straps are significantly more durable than those of other manufacturers. Each strap is reinforced with a special Fluco reinforcement on the inside, which stabilizes the leather and protects it from deformation or stretching.

We primarily use full-grain leather , the topmost and most robust layer of the animal hide. This leather is particularly dense, breathable, and develops a refined patina over time. Some models are made of top-grain or split leather —the respective leather type is indicated under each strap.

You can find more details about the differences between the different types of leather in our article “Types of leather at Fluco – full grain, top grain & split leather in comparison”.

In short: Fluco straps are more durable than ordinary leather straps – thanks to high-quality materials and our own reinforcement.

The following leather watch straps are particularly suitable for classic automatic watches:

• Smooth calfskin – a timeless classic: elegant, simple, and comfortable to wear. Ideal for formal and classic watch models.
  
• Alligator or crocodile leather – a high-quality, elegant option that underscores the luxurious character of an automatic watch. Perfect for dress watches.
  
• Vintage leather straps – with a slightly aged look and patina, ideal for watches with a retro or heritage design.
  
• Nubuck or suede leather – a matte, velvety surface that creates a more modern yet classic look.
  
• Brown or black leather: Universal colors like dark brown or black match almost all classic automatic watches.
  
  

It's important that the color and finish of the strap match the case color and dial. A simple, high-quality leather strap emphasizes the elegance of the watch and creates a timeless look.

If you like things a little more sporty, the Fluco Hunter Racing with seam and perforation is a good choice – sporty, but still classic.

Fluco is also with us!

Our watch straps are manufactured entirely in our factory in the Bavarian Forest – from the first seam to the finished product.

We are one of the last five manufacturers in Europe that still actually produce here, not just design or assemble. Each strap is created with artisanal precision , using the highest quality materials. 100% Made in Germany

Our leather comes mainly from Germany as well as from the most renowned tanneries in France, Italy and the USA .

We select only high-quality, sustainably tanned leather from the world's best manufacturers to ensure the highest quality and durability. Each of our watch straps is crafted with the utmost care in our factory in the Bavarian Forest – 100% Made in Germany .

How to find the right size for your watch strap

Use our guide

The most important measurement is the lug width – the inside dimension between the lugs of your watch.

Simply measure this dimension with a standard ruler or caliper.

Example:

If you measure 20 mm , you need a bracelet with a 20 mm lug width .

The value 20/16 means:

• 20 mm = lug width (on the watch)
  
• 16 mm = buckle width (at the end of the strap)
  
  The band therefore narrows from 20 mm to 16 mm.
  

Length overview (measured without clasp):

• S (women's length): 105 mm + 75 mm
  
• M (standard men's length): 118 mm + 75 mm
  
• XL (Extra long): 128 mm + 85 mm – for larger wrists
  

As the day, so the leather strap for your watch. This allows you to easily switch back and forth between your leather straps without any difficulty and without the need for a spring bar tool. The spring bar can be easily attached and removed from the watch using a slider.

Our attitude towards leather and sustainability

At Fluco, we take great care to source leather exclusively from accredited European tanneries . These tanneries use only hides that are a byproduct of meat processing . No animal is ever slaughtered specifically for our products.

If humanity were to one day completely abandon meat, we would of course immediately switch to animal-free materials . However, at present, this would make neither ecological nor moral sense, as existing leather is already being disposed of and should be processed sensibly.

In our view, leather is one of the most sustainable materials available – durable, repairable, and completely biodegradable.

We also manufacture in Germany , where strict environmental and occupational health and safety standards apply.

Criticism of leather mostly refers to tanneries in the Far East , where environmental regulations hardly exist.

Our partner companies, however, work according to the highest European environmental standards .

One example is the Perlinger tannery in Furth im Wald, from which we source most of our leather.

There, the process water is completely cleaned in its own sewage treatment plant before being returned to the River Chamb .

The hides also come exclusively from southern Germany – short transport routes, minimal emissions.

Many of our production machines are robust vintage machines that have been running reliably for decades – instead of being replaced regularly.

Our electricity has come from our own photovoltaic system for over 20 years .

The result: Our leather bracelets are durable, resource-saving and manufactured under fair conditions – sustainable and morally sound .

Fluco! We still manufacture our own straps in Germany! Custom orders are available – for an additional charge of €40, you can customize your watch strap to your exact specifications.

✅ Choose your leather

✅ Determine the seam color

✅ Define length & shape

Simply send us an email to onlineshop@fluco.de and we will make your dream come true in 4-6 weeks – tailor-made and handmade in Germany!

Yes! Our straps are compatible with all Apple Watch models : Ultra, SE, Series 1–9 in 38mm, 40mm, 41mm, 44mm, 45mm & 49mm .

First, you should determine the size of your Apple Watch, which you can see on the back of your smart watch.

Use our advice

Regarding the length: If you are unsure: Most men (90%) wear M , most women S .

95% of our customers find the straps they ordered fit.

• S: for wrists of 14–16 cm (equivalent to Apple S/M)
  
• M: for wrists from 16.5–21 cm (equivalent to Apple M/L)
  
• XL: from 20 cm (equivalent to Apple XL)

In addition to high-quality genuine leather, we have vegan leather made from wine residues as well as a 100% biodegradable material that completely decomposes in just 7 weeks .

Our bracelets are handmade in Germany , in our factory in the Bavarian Forest – with the highest quality and sustainable materials.

Each strap has a secure adapter that snaps into your Apple Watch with a simple click mechanism – no additional tools required.

Leather bracelets should be protected from water. Use a leather conditioner to keep the material supple.

Normally, your order should arrive within 1-3 business days. International deliveries may take longer.

For returns within Germany, we offer a returns portal. The return fee is €5.90. Alternatively, the item can be returned independently – please include a brief note. Customers outside Germany must arrange the return themselves.

You have 30 days from the date of delivery to do this!

For an exchange, you can use our returns portal (€5.90) ​​or return the item yourself with a brief note. Once received, we will process the exchange within 7 business days. We will refund your exchange amount, and you only need to confirm payment for the new product.

Yes, straps that were ordered as a special order or that have been worn visibly cannot be exchanged or returned.

• European Union : Delivery time varies by country and averages 3-7 working days.
• Switzerland and Liechtenstein : Delivery time is usually 3-7 working days.
• International deliveries outside the EU : Delivery times vary depending on the destination country and average 7-14 working days.

Customers in these areas must always arrange returns themselves. Please send the goods well packaged and with sufficient postage to our address. We will process the return within 7 business days.

You can either return the items to us yourself or use our returns portal :

For Austria, Belgium, France, Luxembourg, the Netherlands and Spain the cost is €9.90.

For the countries Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Hungary, Ireland, Italy, Norway, Poland, Romania, Slovakia and Slovenia the cost is €12.90.

You have 30 days from the date of delivery to do this!

Yes, straps that were ordered as a special order or that have been worn visibly cannot be exchanged or returned.