Fit first · airway-safe
The Frenchie Fit Guide
A Frenchie's barrel chest and short neck are exactly why standard harnesses fail. Here's how to measure yours in two minutes and land the right size the first time — no guessing, no returns.
Measure in 2 minutes: ① Wrap a soft tape around the widest part of the chest, just behind the front legs. ② If weight and chest disagree, trust the chest. ③ Two fingers should slide under the strap — snug, not tight. Between sizes? Size up.
| Size | Range | Chest girth | Weight (guide) | Best for |
|---|---|---|---|---|
| S | Clasp | 40–45 cm | 4–7 kg | Frenchie puppy Puppy |
| M | Clasp | 45–50 cm | 6–9 kg | Growing / petite Growing |
| L | Clasp | 50–56 cm | 8–13 kg | Adult — leaner Adult |
| XL | Clasp | 56–62 cm | 12–18 kg | Adult — broad Adult |
| XL | Belka | ~62–64 cm | By girth | Topping out the Clasp range |
| 2XL | Belka | ~64–68 cm | By girth | Broad adult Most Frenchies |
| 3XL–4XL | Belka | 68 cm + | By girth | Very broad / larger breeds |
Right around the 62 cm handover from Clasp to Belka? Message us your dog's exact chest measurement and we'll confirm XL vs 2XL before you order.
The Clasp range (S–XL) fits by girth with weight as a rough guide; the roomier Belka range (XL–4XL) takes over past 62 cm and fits by girth only. We go by the tape, not the breed. (Based on Curli's official Vest Harness chart.)