Dogs come in all sizes and shapes - between and within breeds. 

We size dog jumpers based on back length and chest girth - not breed. 

Step 1. Please use a tape measure and measure (in cms) body length and chest girth.   

  Back Length Chest (Min) Chest (Max)
Tiny 32cm 40cm 46cm
Small 36cm 46cm 52cm
Medium 42cm 52cm 58cm
Large 48cm 56cm 64cm
X - Large 58cm 62cm 72cm