Measure your dog’s neck with either a piece of string or measuring tape. Two fingers should fit snugly & comfortably between the measuring tape and your dog’s neck.
Size (your dog’s cm neck circumference):
S: 23.5cm - 33cm
M: 31.5cm - 43cm
L: 38.5cm - 58.5cm
Check fit regularly and adjust as appropriate.
WIDTH:
S: 2cm
M: 2.5cm
L: 2.5cm
WEIGHT OF COLLAR:
S: 43g
M: 65g
L: 70g