🐶 Find the Perfect Fit
Use this chart to measure your pup from the collar to the base of the tail to find the right size.
If your dog has long legs, a wider chest, or you’re a taller human, we recommend sizing up for comfort.
| Size |
Length (in) |
Length (cm) |
| XS |
9–12 |
23–30 |
| S |
13–16 |
33–41 |
| M |
17–19 |
43–48 |
| L |
20–22 |
51–56 |
| XL |
23–25 |
58–64 |
| XXL |
26–29 |
66–74 |
⚖️ Weight Limits by Model
| Model |
Weight Limit |
| Trainer |
up to 15 lbs |
| Air 2 |
up to 25 lbs |
| Plus 2 |
up to 35 lbs |
| Urban 3 |
up to 35 lbs |
| K9 Knavigate |
up to 50 lbs |
| Kolossus |
up to 80 lbs |
📏 Tip: When in doubt between sizes, go one size up for extra room and comfort.