A life jacket only works if it fits — too loose and it slips, too tight and it's uncomfortable. Measuring takes one minute.
What you need
All you need is a soft measuring tape (or string + ruler), with your dog standing relaxed.
Three measurements to take
- Chest — Measure around the widest part of the ribcage, just behind the front legs.
- Back length — Measure from the base of the neck to the base of the tail.
- Neck — Measure around the middle of the neck where a collar sits.
Life Jacket with Chin Float size chart (inches)
| Size | Back length | Chest | Neck |
|---|---|---|---|
| XS | 8.3 | 11.8–16.5 | 9.8–13.7 |
| S | 10.2 | 16.1–20.9 | 14.2–18.5 |
| M | 11.8 | 16.1–24.8 | 15.7–18.9 |
| L | 13.8 | 19.7–29.5 | 16.5–21.3 |
| XL | 17.7 | 27.6–37.4 | 19.7–27.9 |
Fit tips
- The chest measurement matters most.
- If your dog is between sizes, size up.
- The jacket should be snug but let you slip two fingers under the straps.
- The chin float should sit under the chin, keeping the head above water.