mastiff-dog-breed-store.com offer Latigo Leather Non-Padded Tracking HarnessHandmade Leather Dog harness for WALKING,Tracking,Training and working ..Small/Medium dog harnessAround the chest behind the front legs(green color on the picture): 24-36 inch (60-92 cm)Around the neck of the dog(red color on the picture): 15-25 inch (38-64 cm)Large dog harnessAround the chest behind the front legs(green color on the picture): 27-40 inch (70-102 cm)Around the neck of the dog(red color on the picture): 17-27 inch (45-70 cm)Extra Large dog harnessAround the chest behind the front legs(green color on the picture): 35-48 inch (90-122 cm)Around the neck of the dog(red color on the picture): 21-31 inch (55-80 cm)