No Pull Dog Harness Sizing

Size  Chest Weight
S

12 - 14" (23 - 28 cm)

 7 - 22 lbs (3 - 10 kg)
M 19 - 24" (48 - 60 cm) 22 - 44 lbs (10 - 20 kg)
L 23 - 28" (58 - 72 cm) 44 - 66 lbs (20 - 30 kg)
XL 24 - 32" (60 - 82 cm) 66 - 99 lbs (30 - 45 kg)