Dog Collar Sizing Tips

Finding the Right Fit

For the most accurate fit, measure your dog's neck where the collar naturally sits. Allow 1–2 fingers of extra room for comfort, and factor in coat thickness if your dog has a heavy or thick coat.

Collar sizing varies by brand and style — don't rely on an existing collar. Always measure your dog's neck directly for the most accurate fit.

Buckle Collar Sizing

Sizing is based on buckle hole placement. For example, a Large fits necks 17"–22" with holes at every inch. For the best fit and most adjustability, choose a size where your dog's measurement falls near the middle holes.

We know measuring isn't always possible — whether it's a gift or a new puppy. If you're unsure which size is right, we're happy to help. Email us at support@vividcanine.com

Slip & House Collars — Getting the Right Fit

Slip and house collars require two measurements for a proper fit.

Measuring the Head

Measure the widest part of your dog's head. To verify the measurement, loop the tape at that width and slide it on and off your dog's head — it should pass over easily without being loose.

Measuring the Neck

Measure your dog's neck at the base where the collar will sit. Allow enough room to slip two fingers comfortably between the tape and your dog's neck.

Fixed Size — Fi Quick-Release Collar

Fixed-size collars are not adjustable, so an accurate measurement is essential.

Measure your dog's neck where the collar will naturally sit. Factor in coat thickness if your dog has a heavy or thick coat. The collar should be snug enough to stay in place without restricting movement or causing discomfort.