How to measure the collar :
Point A is positioned at the base of the withers
Point B is positioned at height of throat
Measure A - B stands just above the shoulder of the ass, where the collar is in support for comfortable traction.
The collar size S is a measure of 38 cm
The collar size M corresponds to the measurement of 42 cm
The collar size L corresponds to the measurement of 46 cm
For intermediate sizes, you can sew a sleeve synthetic sheepskin in which the collar will be slipped and within which you place padding where necessary to best adapt to the collar size of your donkey. The sleeve will also be a good protection of the collar.