Quick answer
Roulis 18 is better for minimalists, travel dinners, and a lighter crossbody look. Roulis 23 is better for daily use because it carries more without losing the slim Hermès shoulder-bag feel.
Hermes Roulis 18 vs 23 at a glance
- Roulis 18: about 18 x 15 x 6 cm, compact, light, best for essentials.
- Roulis 23: about 23 x 16 x 7 cm, wider, more useful, better for everyday carry.
- Both work as crossbody or shoulder bags.
- Both have the Roulis flap shape and elongated Chaîne d'Ancre-style front hardware.
- The 18 looks sharper with minimal outfits.
- The 23 wins if you carry sunglasses, a pouch, or a larger wallet.
Why the Roulis size choice matters
The Roulis is not a loud Hermès bag. That is the appeal. It sits somewhere between practical and polished: less obvious than a Constance, softer in attitude than a Kelly, and easier to wear than many top-handle Hermès styles. Hermès describes the Roulis as practical and made to follow the wearer's movement, which is exactly why the size choice matters.
The Roulis 18 is the pretty one. It looks tight, compact, and intentional. On a smaller frame, it can sit neatly as a crossbody without taking over the outfit. It also looks good as a shoulder bag because the proportions stay tidy. If you like mini bags but dislike bags that are purely decorative, the Roulis 18 is one of the better Hermès options.
Roulis 18 review
The problem is capacity. The 18 is fine for a phone, card holder, keys, lipstick, and maybe a very thin pouch. Add sunglasses, a full wallet, hand cream, or anything bulky, and the charm starts to fade. It is not useless. It is just honest about being small.
The Roulis 23 is the more practical size. Five extra centimeters of width sounds minor until you start packing the bag. It gives you room for a regular wallet, phone, pouch, keys, lipstick, and sunglasses if you pack cleanly. It still keeps the Roulis shape, but it feels less like a special-occasion bag and more like an actual day bag.
Roulis 23 review
For everyday wear, I would take the 23. The proportions are still elegant, and the bag does not become bulky. It gives you enough space to stop editing your life down to three items. If you are already spending Hermès money, that usability matters.
Where the 18 wins is styling. It feels a little more modern and dressy. It works better when the outfit is simple and the bag is part of the line rather than the storage plan. For evenings, city walks, or travel days where you only need essentials, the 18 can feel more refined than the 23.
Which size is better for everyday wear?
Where the 23 wins is comfort over time. You do not have to fight the bag. You can carry the basics plus one or two real-life extras. The strap options still give you crossbody and shoulder wear, so it does not feel like you are trading style for function.
Leather choice changes the review. Evercolor gives the Roulis a smoother, dressier look. Swift can feel soft and rich but may show marks more easily. Epsom gives structure and a more scratch-resistant feel. If you want the bag to stay crisp, choose structure. If you want softness and color depth, accept more care.
Leather and hardware notes
The front hardware is part of the reason people choose the Roulis. It gives the bag a clear Hermès identity without shouting. Check the hardware finish, edge paint, strap holes, stitching around the flap, and how cleanly the flap sits. On a bag this minimal, small flaws are easier to notice.
So which size should you buy? If this is a second or third Hermès bag and you already have daily-carry options, the Roulis 18 is charming. If this is your only Roulis, or you want one bag to do more work, buy the Roulis 23.
Final verdict
I would avoid choosing only by height or body frame. Think about what you actually carry. If your daily kit is phone, card case, keys, and lipstick, the 18 will feel right. If you carry sunglasses, a pouch, receipts, a small wallet, or anything for a longer day out, the 23 is the safer buy.
The honest verdict: Roulis 18 is the better-looking small bag. Roulis 23 is the better bag to own. For most buyers, the 23 is the smarter first Roulis. The 18 is the one to buy when you already know you want compact over convenient.
Useful source and related reading
Hermès describes the Roulis line as practical and designed to move with the wearer. See the official Hermès Roulis page here: Roulis Hermès bags.
For a deeper look at the larger size, read the Hermes Roulis 23 size and daily carry guide before choosing between the Roulis 18 and 23.
Related Roulis reviews and buyer guides
These are tighter follow-up reads for comparing Roulis size, daily carry, material feel, hardware details, and buyer fit.