Size chart IDC Powerharness
For best fit, measure the girth of the dog. Girth will take priority when selecting a size. The girth being the area behind the front legs and around the body. Fitted correctly, the harness should be snug on the dog and not too tight.

Size | Chest girth CM | Chest girth INCH |
Baby 1 | 29 - 36 | 11.5 - 14 |
Baby 2 | 33 - 45 | 13 - 17.5 |
Mini Mini | 40 -53 | 15.5 - 20.5 |
Mini | 49 - 67 | 20 - 26.5 |
0 | 58 - 76 | 23 - 30 |
1 | 63 -85 | 26 - 33.5 |
2 | 71 - 96 | 28 - 37.5 |
3 | 82 - 115 | 32.5 - 46.5 |
4 | 96 - 138 | 38 - 54.5 |