How to measure sizing for the Catlog Belt
1Measure the length around cat's neck.
Measure the narrowest part of the neck, fitting snugly.
2Check the Catlog Belt size
Allow extra length (fitting in one or two human fingers in between) based on the circumference around the neck and select the appropriate size.

Catlog Belt
Size | Length around the neck *Narrowest part of the neck | Length of collar |
Size S | 5.12 - 6.30 in | Approx. 6.30 - 7.48 in |
Size SM | 5.91 - 7.09 in | Approx. 7.09 - 8.27 in |
Size M | 6.69 - 7.87 in | Approx. 7.87 - 9.06 in |
Size ML | 7.48 - 8.66 in | Approx. 8.66 - 9.84 in |
Size L | 8.27 - 9.45 in | Approx. 9.45 - 10.63 in |
Size XL | 9.45 - 10.63 in | Approx. 10.63 - 11.81 in |
*As each Catlog Belt is handmade by craftsmen, the overall length may vary by up to ±10mm. **"Collar length" is the length of the entire collar, including the sensor (Catlog Pendant + Catlog Belt). ***If the collar is too loose, your cat may easily get choked and the measured data may be inaccurate. Reference size: Shorthair Somali, 2 years old (weight 4.5 kg) Length around the neck: approx. 20 cm Length of collar (including Catlog Pendant): approx. 22 cm Belt size: size M