The number in a Birkin’s name is its approximate width in centimetres. Choosing the right size depends on what you carry and how you want the bag to look on you. Here is a quick guide to the main Birkin sizes.
| Size | Approx. width | Best for |
|---|---|---|
| Birkin 20 | 20 cm | Evenings, statement mini bag |
| Birkin 25 | 25 cm | Everyday essentials; today’s most popular size |
| Birkin 30 | 30 cm | Versatile daily bag with room for more |
| Birkin 35 | 35 cm | Work bag, documents and travel |
| Birkin 40 | 40 cm | Travel and carry-all statement |
Birkin 20
The smallest classic Birkin, usually made in the structured Sellier style. It holds a phone, cardholder and keys, and is one of the hardest sizes to find.
Birkin 25
The most sought-after size right now: compact and elegant, but practical for daily use. At US retail it costs about $13,500 in Togo leather (2026).
Birkin 30
A classic everyday size that fits a small tablet, wallet and make-up bag while staying well proportioned on most frames. US retail is about $14,900 in Togo (2026).
Birkin 35
The original working size of the Birkin, roomy enough for documents and a laptop sleeve. US retail is about $16,300 in Togo (2026).
Birkin 40
The largest classic size, ideal for travel or as a weekend carry-all. Increasingly rare in limited editions.
Tips for Choosing
- Stiffer leathers such as Epsom and Box keep their shape; softer Togo and Clemence relax over time and feel roomier.
- Exotic leathers like crocodile are heavier, so many collectors choose a smaller size in exotics.
- If you love a smaller silhouette with hands-free wear, compare the Birkin with the Mini Kelly 20.
Looking for a specific rare Hermès bag? Browse our full collection or message us on WhatsApp at +44 7529 435784 for prices and availability.

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