Back length: This is the most important measurement. Place the measuring tape around the dog's neck at the withers and measure to the base of the tail. The back length can be adjusted to the shorter side by up to 5 cm.
Neck circumference: Gently wrap the measuring tape around your dog's neck where you would normally wear a collar. Do not wrap it too tightly when measuring. The measurements in the size chart are maximum sizes.
Chest circumference: Wrap the measuring tape around the widest part of your dog's chest.
| Size | Back length | Neck circumference | Chest circumference |
| 20 | 20cm | 34cm | 23cm - 44cm |
| 25 | 25cm | 40cm | 29cm - 52cm |
| 30 | 30cm | 44cm | 34cm - 60cm |
| 35 | 35cm | 48cm | 38cm - 66cm |
| 40 | 40cm | 52cm | 43cm - 74cm |
| 45 | 45cm | 56cm | 50cm - 84cm |
| 50 | 50cm | 60cm | 55cm - 88cm |
| 55 | 55cm | 64cm | 60cm - 92cm |
| 60 | 60cm | 68cm | 65cm - 100cm |
| 65 | 65cm | 72cm | 69cm - 106cm |
| 70 | 70cm | 76cm | 75cm - 112cm |
| 80 | 80cm | 80cm | 85cm - 115cm |
| 90 | 90cm | 84cm | 95cm - 118cm |