Julius-K9 IDC Innova Dog Comfort Black Belt Harness Size 2 Mini-Mini: 15.5 - 21 in / 40 - 53 cm 9 - 15.5 lbs / 4-7 kg Mini: 19.5 -26.5 in / 49 - 67 cm / 15.5 33 lbs / 7 - 15 kg Size 0: 23 - 30 in / 58 - 76 cm 31 - 55 lbs / 14 - 25 kg Size 1: 25 - 33.5 in / 63 - 85 cm 50.5 - 66 lbs / 23 - 30 kg Size 2: 28 - 38 in / 71 - 96 cm 61.5 - 88 lbs / 28 - 40 kg Size 3: 32.5 - 45.5 in / 82 - 115 cm 88 - 154 lbs / 40 - 70 kg