Top pick for a first sample order: the Neverfull MM, which the maison lists at roughly 31 x 28 x 17 cm, verified against a centimeter size chart from the factory. The criteria apply to every model in this guide: a chart given in centimeters first, all three axes plus strap drop and handle rise, a stated measuring method (filled or flat), and a tolerance under about half a centimeter on structured shapes. Photos can be staged. A tape measure cannot.

Why Dimensions Are the First Check

Dimension errors are the one defect a supplier cannot hide with lighting, angle, or a better batch of hardware. A Neverfull GM that arrives at 36 cm instead of 39.5 cm reads as a mid-size tote in person, and it will not sit right on the shoulder. Because houses publish length, height, and width for each size variant, you have a fixed reference to compare against before money changes hands.

Most disputes come from mixing units. One inch equals exactly 2.54 cm, so a US listing in inches and a factory sheet in centimeters will differ by a few millimeters after rounding. That gap is arithmetic, not a defect. Compare like with like.

Neverfull Family: PM, MM, GM

Reference points for current production: PM at about 28.5 x 22 x 13 cm, MM at about 31 x 28 x 17 cm, GM at about 39.5 x 32 x 20 cm.

Pros

  • The base is square with clear corner seams, so length and depth are simple to measure.
  • Sizes step in large increments, which makes a wrong chart obvious on arrival.
  • Soft coated canvas forgives small variance in height once the bag is packed.
  • High order volume means most wholesale suppliers hold all three sizes.

Cons

  • Side lacing and cinch straps change the silhouette, so a flat measurement undersells the filled measurement by 1 to 2 cm.
  • Trim width and handle thickness vary between batches and distort the proportions.
  • Base depth is the easiest figure to fudge on a spec sheet.

Use it for: the MM as a daily tote, the GM for travel or a 13-inch laptop, the PM as a small shoulder bag. If you stock one size only, stock the MM.

Speedy 20, 25, 30, 35

Reference points: the 20 at about 20.5 x 15.5 x 12 cm, the 25 at about 25 x 19 x 15 cm, the 30 at about 30 x 21 x 17 cm, and the 35 at about 35 x 23 x 18 cm.

Pros

  • The barrel shape means length runs along the zipper, which is the easiest axis on the whole bag to check.
  • Sizes are numbered, so you can test a chart against its own name.
  • Bandoulière versions let you quote a strap drop alongside the body size.

Cons

  • The 20 and the 25 are close enough that a careless chart swaps them.
  • Rolled handles and zipper end caps vary more than the body does.
  • Hardware is often scaled by eye, so a 25 can arrive with 30-sized rings.

Use it for: the 25 as an everyday crossbody, the 30 as a compact work bag, the 20 for evenings. Check the strap drop before the body length on this family.

Alma BB and Pochette Métis

Reference points: the Alma BB at about 23.5 x 17.5 x 11.5 cm, the Pochette Métis at about 25 x 19 x 7 cm.

Pros

  • Both are structured, so a sagging panel or a shallow gusset shows up the moment you unpack it.
  • Depth on the Pochette Métis is small and checkable with a rigid ruler.

Cons

  • Structured shapes expose every millimeter of depth error that canvas would hide.
  • The curved base on the Alma BB is the hardest element to replicate at scale.
  • Flap placement on the Pochette Métis shifts with the front panel cut, which changes the apparent height.

Use it for: the Alma BB as a dress bag, the Pochette Métis as a daily crossbody with compartments. Ask for a filled photo of the Alma BB, because the shape matters as much as the number.

Keepall 45 and 55, Onthego MM

Reference points: Keepall 45 at about 45 x 27 x 20 cm, Keepall 55 at about 55 x 31 x 25 cm, Onthego MM at about 35 x 28 x 14 cm.

Pros

  • The Keepall size is printed in the model name, so a 45 that measures 43 cm is an immediate fail with no argument.
  • The Onthego MM has a wide, flat base that takes a tape measure without guesswork.

Cons

  • Side bands and end panels flex once the bag is packed, adding height.
  • Reversed canvas panels on the Onthego can shift the seam line and change the front width.

Use it for: Keepall 45 for weekend travel, Keepall 55 for longer trips, Onthego MM as a work tote. Check the handle rise on the Keepall, since a short roll sits wrong in the hand.

How to Measure a Replica Bag

  1. Empty the bag, then repack it the way a customer would carry it. Filled length on soft canvas runs 1 to 2 cm over the flat figure.
  2. Measure length across the widest point of the base, seam to seam, not across the opening.
  3. Measure height from the base seam to the top edge of the opening, with the strap out of the way.
  4. Measure depth across the base gusset from the side, with the bag standing.
  5. Measure strap drop from the top of the strap arc down to the top edge, on the longest setting.
  6. Measure handle rise from the top edge to the inside of the handle.
  7. Work in centimeters first and convert second. A rigid tape beats a soft tailor's tape on structured shapes.

What Counts as a Pass

  • 0 to 5 mm on any axis: passes without comment.
  • 5 to 10 mm on soft canvas: normal, particularly in height once filled.
  • 10 to 15 mm: request a photo of that axis with a ruler in frame before accepting the batch.
  • Over 15 mm on a structured bag: reject the lot.
  • Strap drop off by more than 20 mm: reject, regardless of body size.
  • Hardware scaled to the wrong size class: reject. That is a visual tell, not a measurement error.

Questions to Ask a Wholesale Supplier

  1. Can you send the centimeter chart for this exact batch, not for the model in general?
  2. Do you measure filled or flat, and at which point on the base?
  3. What is the strap drop in centimeters on the longest hole?
  4. Can you send one photo per axis with a ruler visible?
  5. Can I mix sizes inside one sample carton?
  6. What is your policy if a unit lands more than 1 cm off the chart?

Order a mixed sample carton, measure all three axes on arrival, and keep the chart on file. A supplier who answers the six questions above with numbers, rather than adjectives, is the one worth reordering from.