Julius-K9 IDC Powerharness size chart, with how far back to measure
Julius-K9 uses its own size names, from Baby1 to Size 4, and measures girth a set number of fingers behind the front legs.
Short answer: measure chest girth where the harness belly strap will sit, a few fingers behind the front legs, and match it to the Julius-K9 chart. Use girth first. Weight is a rough guide only.
Key takeaways
- Julius-K9 sizes run Baby1, Baby2, Mini-Mini, Mini, then 0 to 4.
- Its US support page says to measure two fingers behind the front legs for Baby1 and Baby2, three fingers for Mini-Mini and Mini, and four fingers for sizes 0 to 4.
- Julius-K9’s FAQ warns that with improper sizing or harness adjustment, some dogs can still wriggle out of the harness.
IDC Powerharness size chart
| Size | Chest girth | Dog weight |
|---|---|---|
| Baby1 | 29–36 cm / 11.5–14 in | 0.8–3 kg / 2–6.5 lb |
| Baby2 | 33–45 cm / 13–17.5 in | 2–5 kg / 4.5–11 lb |
| Mini-Mini | 40–53 cm / 15.5–20.5 in | 4–7 kg / 9–15.5 lb |
| Mini | 49–67 cm / 20–26.5 in | 7–15 kg / 15.5–33 lb |
| 0 | 58–76 cm / 23–30 in | 14–25 kg / 31–55 lb |
| 1 | 63–85 cm / 26–33.5 in | 23–30 kg / 50.5–66 lb |
| 2 | 71–96 cm / 28–37.5 in | 28–40 kg / 61.5–88 lb |
| 3 | 82–115 cm / 32.5–46.5 in | 40–70 kg / 88–154 lb |
| 4 | 96–138 cm / 38–54.5 in | 70–90 kg / 154–198 lb |
Chart from the Julius-K9 IDC Powerharness size chart page. The girth ranges overlap, so many dogs fit two sizes.
When two sizes fit
Overlapping ranges mean a dog with a 30 in girth is inside Size 0, Size 1 and Size 2. Check the weight column for that dog. Our suggestion: pick the size where the girth sits nearer the middle of the range so the straps have room to adjust both ways.
Fit check after it is on
- Julius-K9’s FAQ says to adjust the girth strap so that only your palm can slide between the harness lining and your dog’s back.
- Your dog’s front legs should swing freely without the belly strap rubbing the armpits.
Sources: Julius-K9 IDC Powerharness size chart; Julius-K9 USA support, IDC Powerharness; Julius-K9 FAQ.
Terms used here
- Budget, mid, premium: picks grouped by the maker's own list price, lowest to highest. Budget is everyday basics (a crate, collars, a light harness, boots), mid is padded walking and lift-assist harnesses, premium is specialty gear (a life jacket, a car harness, travel beds). No store prices are shown.
- Chest girth: the distance around the widest part of the rib cage, just behind the front legs. Harnesses are sized by it.
- Back length: base of the neck to base of the tail. A crate should be at least 4 in longer.
- Paw width: the widest part of the front paw while standing. Boots are sized by it.
- Weight band: the weight range a crate or bed size is made for on the maker's chart.