Are All Garmin Watch Straps the Same?

If you have ever owned a Garmin watch, you will know fine well just how much the strap affects your comfort levels and how it fits on your wrist. But when it comes to replacing or upgrading, one question comes up time and again: are all Garmin watch straps the same?

It is a fair question for any smartwatch user, especially when so many straps look similar online. The truth, however, is that Garmin’s range of watches is incredibly diverse. Each model is designed with a specific strap size and individual connection mechanism. Understanding these differences will save you not just time and money but will also make sure that your watch feels and performs exactly as it should.

In this detailed guide, we will walk you through everything you need to know, including the key differences between strap types, a breakdown of popular Garmin models and how to check your watch and strap size properly. 

Why Garmin Watch Straps Are Not All the Same

Although Garmin’s own straps share the same attention to quality, the fine details vary from model to model. This includes how the strap actually connects to the device, how wide it is, and what kind of activities the watch band has been designed for.

Connection Mechanisms

Garmin uses a few different connection systems: Quick Release, QuickFit, and standard spring-bar mechanisms.

• Quick-release straps are more common on lightweight smartwatch models such as the Vivoactive and Forerunner ranges. They feature a small sliding lever that allows you to remove or attach the strap without the use of any tools.
  
  

• QuickFit straps, on the other hand, are used on premium outdoor models like the Fenix series. They use Garmin’s proprietary click-and-lock design, which means you simply snap them into place until you hear a secure click.
  
  

• A handful of older models still use standard spring bars, which require a tool to remove.
  
  

Knowing which connection your Garmin device uses is essential, as QuickFit and Quick Release bands are not interchangeable, even if the strap width is exactly the same.

The Strap Widths and Case Sizes

Every Garmin model has its own specific strap width, which is measured in millimetres (mm). The width determines how securely the strap fits between the watch’s lugs. For example, a 22 mm strap will fit on a watch that requires an 18 mm one.

So, here is a quick summary of some of the most popular Garmin watches and their strap sizes:

• Vivoactive 3 – 20 mm Quick Release strap
  
  

• Vivoactive 4S – 18 mm Quick Release strap
  
  

• Vivoactive 4 – 22 mm Quick Release strap
  
  

• Forerunner 35 – fixed strap system (model-specific replacement required)
  
  

• Forerunner 45S – 18 mm Quick Release strap
  
  

• Forerunner 45 – 20 mm Quick Release strap
  
  

• Forerunner 235 – 22 mm Quick Release strap
  
  

• Fenix 5S/6S/7S – 20 mm QuickFit strap
  
  

• Fenix 5/6/7 – 22 mm QuickFit strap
  
  

• Fenix 5X/6X/7X – 26 mm QuickFit strap
  
  

Even within the same range, Garmin often offers multiple size variants (for example, the Fenix “S” and “X” models). This is why two smartwatches from the same Garmin family can look identical but require completely different straps.

Model-by-Model Overview of Garmin Strap Compatibility

Garmin Vivoactive Series

Garmin Vivoactive 3 (Released 2017)
This model uses 20 mm Quick Release bands. The mechanism is very simple, making it one of the easiest watches to customise. It is compatible with any high-quality 20 mm Quick Release strap designed for Garmin models, such as those available at FitstrapsUK.

Garmin Vivoactive 4 and 4S (Released 2019)
Garmin introduced two sizes to this generation: the 4S for those with smaller wrists (18 mm straps) and the 4 for larger wrists (22 mm). Both use the same Quick Release pin system, but their differing widths mean the straps are not interchangeable between the two sizes.

Garmin Forerunner Series

Forerunner 35 (Released 2016)
This watch uses a model-specific fixed strap design. It is lightweight and perfect for running, but replacements must be designed specifically for the Forerunner 35.

Forerunner 45 and 45S (Released 2019)
The Forerunner 45 uses 20 mm Quick Release straps, while the 45S uses 18 mm. Despite looking almost identical, the two models require different straps from those of the 20mm Vivoctive 3 straps, so it is extremely important to confirm which version you own before ordering.

Forerunner 235 (Released 2015)
The Forerunner 235 needs 22 mm bands with a spring-bar connection. Straps designed for the Forerunner 230, 735 and 630 will also fit, giving users flexibility when choosing replacements.

Garmin Fenix Series

The Fenix line is Garmin’s flagship outdoor range, known for its rugged design and advanced sensors. Every model in the Fenix 5, 6, and 7 series uses Garmin’s QuickFit strap system, but the width depends on the case size.

• Fenix 5S / 6S / 7S = 20 mm (again different from the vivoactive 3 straps)
  
  

• Fenix 5 / 6 / 7 = 22 mm  (different from the Forerunner 235 straps)
  
  

• Fenix 5X / 6X / 7X = 26 mm
  
  

Because of this consistency, users upgrading from one generation to the next can usually reuse their QuickFit straps, as long as the width matches.

Which Garmin Straps Are Interchangeable?

The interchangeability of watch bands for Garmin smartwatches depends entirely on two things: the strap width and the connection mechanism.

If two Garmin smartwatches share the same strap width and both use Quick Release, then yes, the straps are interchangeable. For example, the Vivoactive 3 and Forerunner 245 both use 20 mm Quick Release straps, meaning a strap from one will fit the other.

However, QuickFit and Quick Release are entirely separate systems. A Fenix strap cannot be attached to a Forerunner or Vivoactive model, even if the width appears to match precisely. Similarly, straps from smaller variants (like the 45S or 4S) will not fit their larger counterparts.

It is also important to remember that even small design differences between strap manufacturers can affect fit. That is why choosing a strap made specifically for your model, rather than a “universal strap for a Garmin”, is always the safest option.

Common Mistakes Users Make When Choosing Straps for Their Garmin

Many users assume all watch bands for Garmin smartwatches are exactly the same, which leads to buying the wrong width or the wrong connection type. One of the biggest errors is ignoring the difference between Quick Release and QuickFit systems. These names sound very similar, but they are not interchangeable. Trying to attach a QuickFit strap to a Quick Release watch simply will not work, and trying to force it may even damage the lugs.

Another common mistake is trusting generic listings that claim to fit “all Garmin models”. Every Garmin has precise measurements and tolerances; even a difference of half a millimetre can make a strap loose or cause the pins to fail under pressure.

Material choice also plays a huge role. A low-cost silicone strap might look fine at first, but poorly made pins and connectors can break easily during intense exercise, causing your watch to fall off mid-workout. Also, many users often buy straps that are too long or too short for their wrist size, leading to discomfort or slippage.

At FitstrapsUK, every single strap is clearly labelled with its compatible models, connection type, and width to help customers avoid these issues. By taking an extra minute to double-check your watch model and strap size, you’ll ensure a perfect fit every time.

How to Check Which Garmin You Have

Before buying a strap, the first step is identifying the Garmin model that you own, including whether it is an S or X version. The easiest way to check is to turn the watch over and look at the back of the silver case, where Garmin prints the model name (for example, “Fenix 6S Pro” or “Forerunner 45”).

If the text is getting worn or unclear, you can also find the model name through Garmin Connect or the device’s settings:

1. Open your Garmin watch’s main menu.
   
   

2. Go to Settings → About.
   
   

3. Note down the model number and version.
   
   

Knowing this will help you match your watch precisely with the correct strap size and type.

How to Check Your Garmin Strap Size

Once you know the exact model that you own, the next step is confirming the strap width. The width is the distance between the two lugs where the strap connects to the watch case, measured in millimetres. You can measure this yourself using a small ruler or calipers, or you can refer to Garmin’s official size guide online.

For example, as we mentioned above:

• The Vivoactive 3 uses 20 mm.
  
  

• The Forerunner 45S uses 18 mm.
  
  

• The Fenix 6X uses 26 mm.
  
  

How FitstrapsUK Ensures Compatibility

At FitstrapsUK, we fully understand how confusing Garmin’s model variations can be, as many of our team are Garmin users themselves. That is why every strap on our site is categorised by exact device compatibility rather than just the width alone. Each product description specifies the model names it fits, the width in millimetres, and the attachment mechanism it uses.

We also focus on high-quality materials, always including premium-grade silicone, stainless steel, and soft leather, ensuring comfort and durability no matter how you wear your Garmin. Every strap is tested for secure fitting and long-term reliability, so you never have to worry about loose connectors or irritation.

Choosing from FitstrapsUK means you can replace or upgrade your replacement band for your Garmin smartwatch confidently, knowing it will fit perfectly and last for the long run.

Final Thoughts

So, are all Garmin watch straps the same? Definitely not. Each and every Garmin model, from the lightweight and compact Forerunner to the rugged and solid Fenix, has its own strap width and unique attachment mechanism. Understanding those differences ensures your watch remains comfortable, secure, and perfectly suited to your lifestyle.

Whether you are training for your first marathon or exploring the outdoors at the weekend, the right strap makes all the difference. By checking your watch model, confirming your strap size, and shopping with a trusted specialist like FitstrapsUK, you will always find the perfect fit.

Frequently Asked Questions

Can I use a strap from one Garmin model on another?
Yes, but only if both watches share the same strap width and mechanism (for example, 20 mm Quick Release).

What is the difference between QuickFit and Quick Release?
QuickFit straps snap into place without tools, used mainly on the Fenix range. Quick-release straps use a small lever pin and are common on the Vivoactive and Forerunner ranges.

Are FitstrapsUK straps compatible with all Garmin models?
FitstrapsUK designs straps for a wide range of Garmin models, each labelled clearly by size and model type for guaranteed compatibility.

Which strap is best for sports use?
Classic Silicone and nylon straps are best for running and gym workouts thanks to their durability and sweat resistance.

How do I make sure I order the right strap?
Check your Garmin model name (on the back of the watch or in Settings in the About section), confirm the strap width in millimetres, and choose the correct mechanism.