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How to Change Fi Collar Band (in 5 EASY STEPS)

Whether your dog is growing out of its old band or you’re wanting to change the look of its pup’s wardrobe, it’s time to change the Fi collar band.

If you’re new to Fi collars, changing the band can be a struggle at first – but we’re here to make it easy!

In the next section, we’ll go over how to change Fi collar band to make the switch as smooth and stress-free as possible for you and your furry friend.

How to Change a Fi Collar Band

Changing the FI collar band is super simple once you do it the first time.

NOTE: Make sure you’re purchasing the right size band for your dog!

Follow these steps: 

  • Remove the old band by unbuckling the collar, turning it over, and then pushing the end links downwards until they’re at a 45-degree angle.
  • Then, place your thumb on one side of the module, pushing upwards until the end link detaches. Repeat this step on the other side.

If the band is stuck, lightly tap the base with a hammer to loosen it. 

  • If needed, clean the collar and post and inspect the module for dirt or debris, cleaning it off as needed before attaching a new collar. 
  • Attach the new band by flipping the module over so that it is facing down.
  • With the new band at a 45-degree angle, slide it downwards to fit into the module.

The teeth on the end link should line up with the grooves on the module. Repeat this process on the other side.

  • Test it out. Try clicking your dog’s leash onto the new collar to ensure it’s secure.

Here’s a quick video showing how to change the band:

Read our related article on How to Set Up the Fi Dog Collar! We cover step-by-step how to set up your dog’s collar.

How to Choose the Right Fi Collar Band

You should be able to fit 2 fingers comfortably under your dog's collar.
Collars shouldn’t be too tight. Make sure you can fit 2 fingers comfortably under your pet’s collar.

Here are 4 tips to help you choose the right-fit Fi collar band for your four-legged friend.

1. Consider Your Pet’s Size and Weight

The first step in choosing a fi collar band is considering your pet’s size and weight.

If you have a small dog or cat, you’ll want to select a comfortable band that will not slip off easily.

If you have a large dog, you’ll need a strong band to hold up to their size and strength.

2. Think About Your Pet’s Activity Level

Another essential factor to consider is your pet’s activity level.

If your pet is very active, you’ll want a band that won’t rub their skin or comes loose easily.

On the other hand, if your pet is more low-key, you can choose a band that doesn’t need to be as snug or durable.

Read our related article, How to Turn On Light On Fi Collar. Fi collars feature a light that can be turned on or off. Here’s how to do it!

3. Choose a Material That Suits Your Needs

Fi collar bands are typically made from leather, nylon, or plastic. Each material has its advantages and disadvantages.

  • Leather is more durable but may be less comfortable for some pets.
  • Nylon is less expensive but may not last as long as leather bands.
  • Plastic is lightweight but may not be as adjustable as other materials.

4. Select a Color That You Like

Finally, don’t forget to choose a color that you like!

Fi collar bands are available in almost every color imaginable, so take some time to find one that goes well with your pet.

Read our related article on How to Clean Fi Collar. Your dog’s collar is bound to get dirty, here’s how to clean the Fi Collar!

How to Measure Your Pet’s Neck

Measuring your dog's neck can help you get the perfect fit the first time.
Measuring your dog’s neck can give your dog the right fit the first time!

Measuring your pet’s neck before purchasing a FI collar band is very important.

The wrong size can be uncomfortable for your pet and cause the collar to slip off.

Here are some ways to measure your pet’s neck:

Use a Tape Measure

This is the most accurate way to measure your pet’s neck.

Wrap the tape measure around their neck and note the measurement.

Use a String

Any length of string or yarn will suffice if you don’t have a tape measure.

On one end, tape or wrap it around your pet’s neck, then cut it to the required length.

Measure the line after you have missed it to measure it accurately.

Read our related article on How to Cancel Fi Collar Subscription. If the Fi collar isn’t right for you, you can cancel with these steps!

Use a Ruler

Another option is to use a ruler or yardstick.

Place the ruler on your pet’s neck and mark where the end of its neck meets the ruler.

Then, measuring from that point, mark off the desired length of the collar band.

Once you have your measurement, transfer it to a piece of paper or a tape measure to have an accurate measurement.


As a last resort, you can always estimate the size of your pet’s neck.

If unsure how big their neck is, try wrapping your fingers around them and counting how many inches that would be.

Read our related article, Are GPS Collars Safe for Dogs? Can they cause cancer? We discuss health concerns pet owners have in this guide.

Benefits of Changing a Fi Collar Band

Changing the band can reduce chafing.
Changing bands after old ones are worn out will prevent chafing or discoloring your dog’s neck and fur.

One of the benefits of changing a fi collar band is that it can help to prevent chafing.

When a dog’s fur rubs against the collar, it can cause the skin to become irritated and inflamed.

Switching to a band with a softer material can help reduce this friction and keep your dog’s skin healthy.

Another benefit of changing a fi collar band is that it can provide a better fit.

As your dog grows and his fur changes, his collar may become loose or uncomfortable. A new band can help to ensure that the collar fits snugly and doesn’t slip off.

Finally, changing a fi collar band can be a great way to add some variety to your dog’s wardrobe.

Read our related article, How Do GPS Dog Collars Work? We explore the ins and outs of GPS dog collars!

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Jesse Hopping, CCDT

Jesse is a natural-born dog-lover certified dog trainer (CCDT), dog foster, and former volunteer at Richmond SPCA and surrounding dog shelters for over 10 years. Her pack includes a Bernedoodle and 3 Boston Terriers. She’s sipping caramel coffee and watching her pack play in the sun when she’s not writing blogs. Jesse has her Certified Dog Trainer designation from CATCH Canine Trainers Academy since 2018 and and majored in English from the University of Virginia.

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