Measure around your dog's neck where the collar sits with a soft tape. Choose by neck measurement rather than weight.
| Size | Width | Collar adjustment range |
|---|
| M | 10 mm | 20–70 cm (8–28 in) |
|---|
| L | 12 mm | 20–70 cm (8–28 in) |
|---|
Both sizes have the same collar adjustment range; only the width differs. Set the collar so the loop cannot close too far.
The separate lead supplied with the collar-and-lead option is 110 cm (43 in) long and 2 cm (1 in) wide. This measurement does not apply to the one-piece option.
Dog weight limits and the one-piece lead length are not provided. The supplied chart does not distinguish relaxed and tightened collar measurements. Collar widths are shown in metric only to avoid misleading whole-inch rounding. Measurements are taken by hand, so a 1–2 cm difference is normal.