The HAC à Dos — French for “on the back” — is the backpack interpretation of the Haut à Courroies, and one of the rarest silhouettes in Hermès’ men’s line. It comes in two sizes, PM and GM. Here is how they compare on size, price and use, with real figures.
PM vs GM at a glance
| HAC à Dos PM | HAC à Dos GM | |
|---|---|---|
| Dimensions (W×H×D) | ~18 × 28 × 8 cm | ~26 × 36 × 11 cm |
| 2026 US retail | ~$11,300 | ~$13,200 |
| Best for | Everyday, lighter carry | Capacity, short trips |
| Holds | Essentials, small tablet | Tablet or small laptop, more |
| Feel | Sleeker, more wearable | Substantial, more presence |
Design and leathers
Both keep the HAC’s design language — clean structure, crossed leather straps, refined hardware, hand saddle-stitching — reworked into shoulder straps, and both are made in Barenia Faubourg and Togo. The result is unmistakably Hermès and genuinely rare; the HAC à Dos surfaces on the secondary market only occasionally, in either size, and rarely below retail.
How to choose
Pick the PM for a sleeker daily backpack that carries essentials; pick the GM if capacity matters more than compactness. Either way, authenticate carefully — see our authentication guide and the complete HAC guide.
Frequently asked questions
What is the difference between the HAC à Dos PM and GM?
The PM is ~18 × 28 × 8 cm (~$11,300) and suits everyday carry; the GM is larger at ~26 × 36 × 11 cm (~$13,200) with room for a small laptop.
Which is bigger, PM or GM?
GM (grand modèle) is the larger size; PM (petit modèle) is the smaller, more everyday size.
Is the HAC à Dos rare?
Yes. It is one of the rarer HAC formats and appears on the resale market only occasionally, rarely below retail.
