Replacement Luxury Strap Guide For Cartier Santos 100 – Medium, Large, XL

The Cartier Santos 100 is one of the most recognizable square watches in Cartier’s history. Introduced for the 100th anniversary of the original Santos, the Santos 100 brought a larger, more substantial case design to the collection and became particularly popular among collectors who prefer a bold wrist presence.

Today, finding the right Cartier Santos 100 replacement strap can be confusing because the Santos 100 was produced in several sizes and references. The strap width is not the same across every model, and the Santos 100 also uses a different attachment design from the modern Santos de Cartier with QuickSwitch.

Whether you are looking for a Cartier Santos 100 leather strap, rubber strap, metal bracelet, nylon strap or Velcro watch band, the first step is to identify your exact model and lug size.

Explore more replacement strap guide for Cartier

Replacement yellow belly scale alligator leather watch strap fit for Cartier Santos 100

Cartier Santos 100 Watch Lug Sizes

One of the most important things to check before buying a replacement strap is the lug-end width.

Common Santos 100 configurations include:

Santos 100 ModelCommon Lug WidthExample Reference
Midsize / Medium20 mm
  • W20106X8
  • 2878 
  • W20107X7
  • W20126X8
  • W2020008
  • W20127X7
  • W20112Y1
  • W20105Y1
  • …
Large / XL23 mm
  • W20073X8
  • W20072X7
  • W200728G
  • W20078Y1
  • W2020009
  • WSSA0006
  • W2020010
  • W2020020
  • W20071Y1
  • W2020057
  • …
XL Chronograph24 mm
  • W20090X8
  • 2656
  • W2020018
  • Selected Skeleton and Chronograph versions
  • …

Different Connector Type Between Cartier Santos 100 vs. Modern Santos de Cartier

The Santos 100 belongs to an earlier generation of the Santos design. Modern Santos de Cartier models introduced Cartier’s QuickSwitch strap-changing system, while the Santos 100 uses a different case and strap attachment arrangement.

Custom Double Folded Quickswitch Calfskin Leather Straps For New Cartier Santos (Multi-Colors) (1)
Quick switch - tools free
Custom Bespoke High-Quality Canvas Velcro Replacement Watch Strap For Cartier Santos 100 Midsize, Large, XL For Sale (4)
Traditional spring bar system

Cartier Santos 100 Strap Attachment & Compatibility

1. Watch Reference
Look at the reference number on your watch or documentation.
 
2. Lug Width
Measure the strap connection at the watch case. Common Santos 100 sizes include 20mm, 23mm and 24.5mm, depending on the model.
18mm 21mm Black Stainless Steel Folding Clasp Deployant Watch Buckle For Cartier Santos 100

Different connector of custom strap for cartier santos 100

We offer two end connectors options for replacement straps for Santos 100 . Rubber connector is the default option.
 
Rubber Connector (Default):
Lightweight, OEM-style design, identical to the original strap for perfect fit and daily comfort.
Stainless Steel Connector:
Solid, sturdy and anti-deformation. Slightly heavier but far more durable for long-term use.
Watch Rubber Inserts For Cartier Santos 100 XL ManLady Watch Leather Strap Insert 20mm 23mm Adapter (3)
Watch Rubber Inserts For Cartier Santos 100 XL ManLady Watch Leather Strap Insert 20mm 23mm Adapter (3)

Cartier Santos 100 watch buckle

Depending on the strap style, you may be able to reuse your existing Cartier buckle or deployant clasp. Other replacement options are supplied with their own closure.
For more information about Cartier clasp types and installation, see our Cartier Watch Clasp Instructions.
cartier santos 100 buckle
how to measure cartier santos 100 buckle

Best Replacement Strap Styles for Cartier Santos 100

The Santos 100 has been offered with different strap and bracelet configurations, so there is no single replacement style for every owner.
 
Your choice can depend on whether you want to preserve the original appearance or give the watch a more casual or sporty character.

1. Custom Alligator Leather Strap For Cartier Santos 100

 
Royalwatchstrap’s alligator leather strap is a natural choice for owners who want a more traditional luxury appearance. The sleek, glossy finish of the crocodile leather adds a layer of refined elegance that pairs beautifully with the stainless steel or gold casing of the Santos 100. The black color is versatile and can seamlessly transition from casual to formal wear, making it ideal for both day-to-day use and special occasions.
 
 
Handmade Alligator Leather Strap For Cartier Santos 100 Medium Large XL Leather Watch Band Replacement  (5)
Custom handmade yellow belly scale alligator double folded leather watch straps fit for Cartier Santos 100
Handmade Alligator Leather Strap For Cartier Santos 100 Medium Large XL Leather Watch Band Replacement  (6)

2.Custom Nylon Watch Band Replacement For Cartier Santos 100

Nylon or textile-style straps can give the Santos 100 a more casual and sporty appearance.
They are particularly useful if you want to move away from the traditional leather look while keeping the watch relatively lightweight.

3.Replacement Rubber Strap For Cartier Santos 100 XL Chronograph

Rubber strap can change the personality of the Santos 100 XL Chronograph considerably.

4.PVC Rubber Canvas-Pattern Velcro Strap For Cartier Santos 100

Available Options & Features
  • Compatibility: Designed to fit Cartier Santos 100 models (Medium, Large, and XL Chronograph)
  • Materials: High-density water-resistant canvas or PVC rubber with a waterproof calf leather lining and ventilation holes for comfort
  • Design: Adjustable hook-and-loop Velcro fasteners that offer easy on-and-off wear
  • Customization: Most makers allow custom sizing based on exact wrist measurements, along with a choice of canvas colors and stitching

How to Change Your Cartier Santos 100 Strap

The Santos 100 does not use the same QuickSwitch system found on many modern Santos de Cartier models.
For that reason, the strap should be removed according to the attachment system used by your specific Santos 100 reference
 
Before removing the original strap:
 
Use the appropriate watch tool for the attachment system.
Remove the original strap carefully without scratching the case.
Install the replacement strap with the correct orientation.
Check that both sides are securely attached before wearing the watch.
 
 

FAQ

Q:Can I keep my original Cartier buckle?
A:Can be made to work with a compatible original Cartier buckle or deployant clasp. Confirm the buckle-end dimensions before ordering.

Q:Do you make custom straps for Cartier Santos 100?
A:Yes. Custom straps can be made in different materials, colors and lengths. If your reference is not listed in our size guide, send us the model number and photos of the original strap connection for compatibility checking.

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