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The Row Size Numbers Made Simple: Margaux 10, 12, 15 and Beyond

Adjectives are how most luxury houses name their sizes. A Mini, a Small, a Medium and, if the house is feeling expansive, a Jumbo: and none of them means anything you can measure. The Row does something discreetly different across a large part of its line, and once you spot it the whole catalogue becomes easier to read. The number in a model name is the bag’s width, in inches. Margaux 10 measures ten inches across. Margaux 12 comes in at twelve. That one fact does more practical work than any amount of styling copy, and it runs through this explainer from start to finish.

The convention reaches well beyond the flagship. It takes in Margaux 10, 12, 15 and 17, India 10.00, 12.00 and 15.75, Agnes 12 and 15, Sofia 8.75 and 10, and Marlo 12 and 14. Look at the decimals, since nobody writes 15.75 unless the figure is meant to be read literally. What follows sets out how far the rule extends, where it bends, what the number leaves out, and how to turn it into a decision when you are choosing between two sizes of the same bag.

The rule, stated plainly

Take the number in the name, add the word inches, and you have the width of the bag. That is the whole system, stlaurentbag.com and it holds consistently enough across the numbered families to count as a rule rather than a fluke. It is unusually plain labelling, since it closes the gap between what a size sounds like and what it measures. A Small from one house can be larger than a Medium from another, but ten inches is ten inches anywhere. For anyone measuring The Row bags against something already in the wardrobe, it turns the comparison into arithmetic rather than guesswork. It also explains how the brand can run four sizes of a single silhouette without confusing anybody.

What the number does not tell you

One dimension of three is width, and the remaining two do not follow it in any predictable way. Consider the two Soft Margaux sizes that have official figures behind them, since the 10 measures 10 x 7 x 7.5 in and the 12 measures 12 x 9 x 7.5 in. The depth stays identical at 7.5 inches, so the bigger bag is no proportional enlargement of the smaller one. What moves is the height, up by two inches, and the width, up by the same. In practice, stepping up a size delivers a taller opening and more length rather than a deeper bag. If you expect the 12 to hold twice what the 10 holds, the difference will be less than the numbers imply.

The handle drop stays constant too, at five inches on both Soft Margaux sizes, which is another thing the model number will not tell you. Five inches is a hand-carry or crook-of-the-elbow drop rather than a shoulder one, and both sizes ship with a removable shoulder strap to handle the rest. Interior fittings differ between them as well: the 10 has a single card slot while the 12 adds a second plus a zip pocket. Those details decide how a bag behaves day to day far more than an inch of width does. Use the number to place the bag on a scale, then read the specification to learn what it does.

The Margaux Shoulder 12, where the rule bends

One model in the current line departs from the pattern, and that is worth stating clearly rather than quietly. A twelve sits in the name of the Margaux Shoulder 12, but the brand publishes its dimensions as 14.75 x 9 x 5 in. Name width and specification width do not agree here, so on this model the number works as a family size rather than a literal external measurement. That fits what the silhouette actually does, because it is a reworked shape with elongated tubular handles and narrowed gusseted side panels rather than a straightforward scaling of the tote. The lesson applies: use the number as your starting point, then confirm against published dimensions before you commit. If a listing offers no dimensions at all, the number is a pointer and not a measurement.

What each width actually holds

Most guides skip the step that matters, which is translating inches into daily use. Under ten inches wide you are looking at a phone, cardholder, keys and lipstick affair, which is where the Sofia 8.75 and the small clutches belong. Ten inches is the standard small day bag, enough for a compact wallet, a phone, sunglasses and a slim pouch without distortion. Twelve inches is where a bag begins absorbing a paperback, a small notebook, a folded scarf and a full-size wallet at once. Fourteen to fifteen inches is a working width, where documents and a tablet are no longer a squeeze. Seventeen inches, as on the Margaux 17, reads as a travel dimension rather than an everyday one.

• 8.75 to 10 in: evening use, errands and any occasion where you want the bag to vanish.
• 12 in: the most useful width in the line and the one most buyers settle on.
• 14 to 15 in: work, commuting and days when you carry other people’s things too.
• 17 in: travel and overnight use, where soft structure counts as a feature rather than a compromise.

Price tracks width, but material moves faster still

Size and price track each other, though not as sharply as you might expect. Using observed 2026 market prices, the Soft Margaux 10 sits at $3,650 and the Soft Margaux 12 at $4,350, so two inches of width costs about $700. Marlo 12 has been observed at $3,600 and $4,900 depending on the version, with Marlo 14 at $5,300, a considerably larger step for the same two inches. Material moves in bigger leaps than size does, since India 10.00 is $3,850 in leather against $5,370 in suede, and Agnes 15 runs $5,000 in leather, $5,800 in suede and $4,300 in a canvas blend. With Agnes 12 at $4,400, the leather Agnes 15 is only $600 more for three additional inches. Where spend is being optimised, material is the weightier financial decision and width the bigger practical one.

The bags that carry no number

Plenty of the line falls outside the system, and confusion starts when the two conventions get mixed. The Park Tote family relies on words rather than inches, running Small, Medium, Large and XL alongside the N/S Park Tote and Park Tote Three. Small bags such as the 90’s Bag, the Half Moon and the Bourse Clutch are named without any size marker at all. With those, dimensions are all you have: the Bourse Clutch is listed at 10.2 x 6.5 x 2.3 in, and the Half Moon is given officially as 8 x 13.5 x 2.5 in, with other listings differing enough that the figure is best read as approximate. No rule governs the archive models either, the Camden measuring roughly 9 x 12.5 x 5.25 in despite carrying no number. Orientation shorthand is what the N/S and E/W prefixes provide, widely read as north-south for taller shapes and east-west for wider ones.

Turning inches into a decision

The practical value of a literal sizing system is that it can be tested before you buy. Take a bag you already own and like, measure it, and set its width against the number in the model name you are considering. Repeat it for the widest thing you carry routinely, whether a laptop, a folder or a water bottle, then add an inch of tolerance for soft construction. Keep in mind that most of these are unstructured shapes, which is why a bag looks smaller empty and fuller in use than any flat measurement suggests. If you are between sizes on a soft silhouette, the smaller one usually looks better and the larger one usually serves better. That trade-off, rather than the number itself, is the actual choice in front of you when you buy row handbags in a numbered family.