| Size | Chest | Strap width |
|---|
| S | 42–58 | 2.0 |
|---|
| M | 50–72 | 2.0 |
|---|
All measurements in cm.
Chest: around the widest part of the ribcage, just behind the front legs. Choose the size where your dog's chest sits inside the range. Two fingers should slide flat under every strap.
Fit example from the maker: a Dalmatian with a 68 cm chest and 40 cm neck (about 20 kg) wears M.
Breed guide: S – Cavalier King Charles, Jack Russell, Miniature Schnauzer. M – Cocker Spaniel, Beagle, Border Collie, Dalmatian.
Between sizes? Take the larger size. Hand-measured; allow 1–2 cm.