Fitbit Strap Sizes Explained

Unlocking Your Perfect Fit: Why Fitbit Strap Sizing Matters

The average adult wrist size here in the UK can vary by up to 30 millimetres, this wide range has a large influence not just on the comfort levels of the user but also on the accuracy of the readings that your fitness tracker gives you. For a fitness tracker like a Fitbit, where the precision of the data is most likely the main reason you purchased the device, the size of the strap that you choose is much more than just a matter of how nice it looks, it is also about how your trusty Fitbit tracker performs in terms of data metrics.  Fitbit Strap sizes 

Fitbit straps are designed to ensure that sensors on your device remain snug against your wrist in order for it to obtain the most accurate readings when it comes to metrics such as heart rate, steps taken, and the quality of your sleep. A strap that fits the user's wrist poorly can skew these measurements, leading to your device feeding you incorrect data that can potentially impact your fitness goals going forward. Choosing the right Fitbit strap size makes sure that your device remains securely fitted to your wrist during everything from the most taxing of gym sessions to a big night out downtown. 

As the UK’s most trusted Fitbit Strap retailer for over 6 years now, FitstrapsUK has a wealth of experience when it comes to Fitbit Wristbands and Fitbit strap sizing, that our 180,000 plus (at the time of writing) happy customers can confirm. In this handy guide, we’re aiming to simplify everything you need to know about Fitbit strap sizes, helping you make the most informed decision when it comes to maximising the comfort, functionality, and style of your next Fitbit Strap.

How Do I Know Which Size Fitbit Band to Get?

As we touched on above, picking the correct Fitbit strap size is really important when it comes to comfort levels, data accuracy, and the general functionality of your fitness tracker. Each of Fitbit’s offerings on the market today offers specific strap options which cater to various different wrist sizes and preferences. So let’s get right to it and start exploring the sizing details for popular Fitbit models, to ensure your strap fits to perfection. 

Measuring Your Wrist for the Perfect Fit

At Fitstraps we always recommend that you start off by measuring the circumference of your wrist to ensure you get the ideal strap size. We recommend using a flexible tape measure for the most accurate results by following the steps below: 

• Wrap the tape measure snugly around your wrist, just above your wrist bone.

• Mark where the ends of the tape meet and measure it with a ruler.

• Make a note of your wrist size in inches if shopping with us at Fitstraps but you may want to write down in millimetres in case you opt for lesser retailers in future. 

Once you have written down your measurements you can compare it to either Fitbit’s sizing charts or FitstrapsUK’s sizing options on our website for each specific model that we have listed below. 

Fitbit Versa 3 Straps

The Fitbit Versa 3 is a lightweight smartwatch and is still one of Fitbit’s most versatile and popular models, and its straps are designed in keeping with its lightweight and stylish appeal, FitstrapsUK offers sizing options for Versa 3 bands below:

• Small: Fits wrist sizes 140mm–180mm (5.5"–7.1").

• Large: Fits wrist sizes 180mm–220mm (7.1"–8.7").

For the Versa 3, we offer an unbeatable range of styles and materials, such as classic silicone for your toughest of workouts, classic leather for a more professional look along metal for a premium and classy look for the weekends.

Fitbit Versa 4 Watch Straps

The Versa 4, really is a smartwatch packed with advanced features and comes complete with many different strap options for both active and more casual users alike. The straps are fully interchangeable, and allow you the option of switching between colours and styles in effortless fashion. Size options for this model are:

• Small: Fits wrists 140mm–180mm (5.5"–7.1").

• Large: Fits wrists 180mm–220mm (7.1"–8.7").

Our range of Versa straps includes an amazing range of colour choices with a sporty silicone band for gym workouts, premium leather options perfect for work wear and metallic wristbands for a polished and premium look ideal for more formal occasions such as weddings and work nights out.

Fitbit Charge 5 Straps

The Charge 5, is well known among wearable tech lovers across the UK and beyond for its stylish and compact design and is a favourite among those looking for advanced and easy-to-use functions at a really reasonable price tag. The straps of the Charge 5 are available in the following sizes:

• Small: Which fits wrists -  135mm–170mm (5.3"–6.7").

• Large: Which fits wrists - 170mm–210mm (6.7"–8.3").

Our ever-growing range of Charge 5 wristbands includes funky and bold colours to match your running gear to perfection, funky patterned scrunchie bands and elegant leather straps for professional settings such as work meetings. Always be fully confident when purchasing from Fitstraps as our straps cater specifically to the Charge 5’s unique attachments. 

Fitbit Charge 6 Straps

Like the Charge 5, the Charge 6 is also gaining in popularity and comes with the option for all wearable tech lovers look for the option of switching up watch bands to fit whatever their mood is that day. Sizes for the Charge 6 include:

• Small: Fits wrists 135mm–170mm (5.3"–6.7").

• Large: Fits wrists 170mm–210mm (6.7"–8.3").

For those who are really looking to make a style statement, our Fitbit’s Charge 6 straps include vibrant and bold classic silicone bands in an unbeatable range of colours, breathable sports style watch straps that can stand up to even the most taxing of high-intensity workouts, and classic leather options to smarten up your look.

Fitbit Sense 2 Bands 

The Sense 2, Fitbit’s most premium offering is also more a health and wellness-focused smartwatch, and offers strap sizes which are tailored to fit the sizes below:

• Small Straps: Fits wrists 140mm–180mm (5.5"–7.1").

• Large Straps: Fits wrists 180mm–220mm (7.1"–8.7").

Our Sense 2 straps feature a wide variety of materials and styles, which makes finding the perfect look to take your Sense 2 to the next level easier than ever. From classic-looking silicone for use during your yoga sessions to premium-grade stainless steel for an important meeting at work. The quick-release mechanism featured on all of our Fitstraps makes chopping and changing between styles each day easier than you could ever imagine. 

Fitbit Inspire 2 Bands:

The Inspire 2, is well known by fitness lovers as a lightweight entry-level device which features a minimalist and classic-looking design and is ideal for casual users or those who want to keep it simple when it comes to features. Strap sizes include:

• Small Watch Bands: Fits wrists 137mm–178mm (5.4"–7.0").

• Large Watch Bands: Fits wrists 178mm–218mm (7.0"–8.6").

Our Inspire 2 straps come in soft silicone for all-day comfort even during the most challenging of runs or gym sessions, classic leather to lift your fitness tracker look for the evening, and funky and jazzy prints to give your tracker some added personality for the weekend. 

Fitbit Inspire 3 Wristbands

Building on its predecessor the Inspire 2, the Inspire 3 offers an upgraded watch strap selection while maintaining its lightweight and minimalist appeal. The Strap sizes we offer mirror those of the Inspire 2:

• Small: Fits wrists 137mm–178mm (5.4"–7.0").

• Large: Fits wrists 178mm–218mm (7.0"–8.6").

When you set out on your mission of selecting a Fitbit strap, it’s important that you consider the following: For high-intensity workouts such as weightlifting or CrossFit sessions, opt for some of our secure and sweat-resistant silicone straps. For casual or professional wear such as job interviews or weddings look for premium materials like our leather watch bands or stainless steel straps. For optimal levels of sleep tracking, prioritise lightweight, breathable materials such as our Nylon or Scrunchie Fitstraps in order to prevent discomfort. When sleeping.  

What Size is a Large Fitbit Strap?

For the majority of Fitbit models on the market today, the tech giant offers two main strap sizes to its loyal base of users, small and large, with the larger straps catering to individuals with broader wrists. Grasping a good understanding of the dimensions of a large Fitbit strap ensures a comfortable fit and will prevent you from having to make unnecessary adjustments during use. For those of us who find ourselves slightly between the two size options, the Large strap is often the safer choice due to it also being adjustable and providing slightly more room whilst keeping your tracker securely fastened to your wrist. 

A Large Fitbit strap typically accommodates those with wrist circumferences that range between the 7.1" and 8.7" mark, depending on the specific model. However, the exact measurements can vary slightly from model to model. As an example, the Fitbit Charge 5 Large strap fits wrist sizes that measure between 6.7" and 8.3", while the Versa 4 Large strap is slightly bigger and fits those with wrist sizes between 7.1" and 8.7". The Inspire 2 Large strap extends to those with wrist sizes up to 8.6", making it a great choice for those with slightly larger wrists who still prefer more of a lightweight feel tracker.

When choosing a Large strap, it's always first important to consider the activities you’ll regularly use your Fitbit tracker for. For your gym workouts or high-intensity activities such as long hikes at the weekend or marathon training, a slightly tighter fit may be a good choice to keep your device securely fastened to your wrist to prevent any distractions whilst training. When choosing a setting for everyday wear, it may be better to opt for a slightly looser fit for more casual comfort. 

By gaining a good understanding of the dimensions and features of a Large Fitbit strap, you can be very confident when choosing the right option for your wrist size and lifestyle, which will make certain you will experience the maximum levels of comfort and device accuracy when using your tracker. 

Understanding Fitbit Wristband Sizes to Make the Most of Your Device 

If you’re a loyal Fitbit user, you’ll know that your Fitbit is more than just a fitness tracker, it’s a versatile fitness companion and coach designed to fully support your health and fitness goals. Choosing the perfect watch strap is the key to fully maximising its data tracking functions, optimising comfort levels, and putting your own stamp on it when it comes to style. With an unbeatable range of styles, materials, and designs to choose from here at Fitstraps, you can always wear your device being fully confident that your Fitbit tracker complements your chosen activities and sense of style while keeping your data metrics fully accurate.

The strap size you choose directly impacts your Fitbit’s performance. A strap that is too loose can cause inaccurate heart rate or activity readings due to the sensors not being able to track the data as efficiently as they should, while one that is worn too tight on your wrist may lead to discomfort during extended wear. As an example, if you’re wearing a Versa 4 or Charge 5 during one of your more intense workouts, it may be better to opt for a slightly snugger fit around your wrist with one of our breathable silicone Fitstraps to keep your tracker secure and your metrics reliable during your session. On the other hand, for more casual outings at the weekend or for more professional settings such as a work lunch, a looser fit with one of our stylish leather or stainless steel straps will give you the perfect blend of comfort and sophistication.

Materials also play a large part in how your Fitbit device feels as you wear it throughout the day. For those, who work on their fitness many times throughout the week, silicone and perforated sports sports style Fitstraps are the ideal choices due to their sweat resistance and flexibility on the user's wrist when training. The ability to switch straps easily across most Fitbit models, paired with the unbeatable range of options offered by Fitstraps allows you to customise your wearable tech to suit every single occasion for which you’d like to wear it. Whether you need a secure sporty strap for your early morning run, a breathable and comfortable watch band for sleep tracking, or a classy premium leather watch band option for a smart dinner downtown, Fitbit’s interchangeable straps paired with Fitstraps amazing collection of styles ensures you’re never tied down to a single look.

Another factor that often gets overlooked by fitness watch users is the long-term durability of the watch band. Making a slightly larger investment in high-quality straps ensures they withstand the wear and tear that your lifestyle throws their way, whether you’re training for your first marathon or simply wearing your Fitbit device daily. Fitbit’s official straps, as well as premium options from Fitstraps, have been designed with durability at the front of mind, offering robust and durable materials and secure connector clasps to keep your device in place, no matter how active your lifestyle is.

By making sure that you select the right strap size, material, and design, you can level up your Fitbit experience. Whether you own a Sense 2, Versa 3, Inspire 2 or any other version of Fitbit device, the perfect strap makes all the difference when it comes to ensuring your tracker stays comfortable, and functional and reflects your own sense of style.

Exploring Options for Customising Fitbit Straps Across Models

One of the ever-popular features of Fitbit devices is their customisable watch straps, allowing users to easily personalise their wearable tech in order to match their style preferences, weekly activities, and fitness goals. With a variety of materials, colours, and designs available across Fitbit’s own range and an even larger range of choices here at FitstrapsUK you can transform your fitness tracker into your own customised device that is a true reflection of your personality and style.  

Customisation begins with you understanding your device’s specific strap compatibility. Each Fitbit model, such as the Charge 5, Versa 4, Sense 2, and Inspire series, features its own strap attachment system and sizing options which we have covered above in the article. While official Fitbit straps guarantee a perfect fit, Fitstraps do this just as well and expand your choices, whilst offering better value.