Step 1: Use a soft tape measure and wrap it around your dog's neck where their collar would normally sit.

Step 2: Ensure you can comfortably fit two flat fingers between the tape and your dog’s neck. This ensures a snug but not tight fit.

Step 3: Do not use your dog’s old collar to measure (especially buckle styles) as this won’t provide an accurate neck size.

Step 4: Use your dog's neck measurement to choose the right collar from the available list. Each collar is adjustable, so the neck size should fall within the given size range.