Every pooch needs a Queen B Country genuine cowhide and leather collar. 
Genuine cowhide top with a leather back and quality brass hardware. 

Measurements taken from first to last hole. 

Extra Small - 16cm - 26cm 

Small  25cm - 35cm 

Medium  36cm - 46cm

Large  47cm - 57cm 

Extra Large  58cm - 68cm 

(Extra Small & Small are 2.5cm, Medium, Large and Extra Large are 3cm wide)