Knox Q Harness Size Chart

SIZE
NECK GIRTH
BREAST GIRTH
SMALL
11.0 INCHES
13.0 INCHES
MEDIUM
12.6 INCHES
14.2 INCHES
LARGE
15.0 INCHES
15.7 INCHES

 

Please note that these measurements are the dimensions of the actual product. 
Make sure all measurements fit within the dimensions with a little room to spare in the neck and the breast.