Mori
Here’s how Mori fits your child compared to other brands you might be considering, so you know before it’s in your cart.
What size is (and isn’t) like Mori at other brands?
Find your child’s Mori size on the left. Twins wear the same number the same way — your size carries straight over. Strangers use the same number but cut it shorter or longer, so don’t trust the label alone.
| Mori | Size twinssame number fits the same | Size strangerssame number, different cut |
|---|---|---|
| nb0–22.1" | — | Quincy Mae↑ longer |
| newborn0–22.1" | — | No same-size match at other brands |
| 0-3M22.1–24.4" | ||
| 0-3m24.4" | — | |
| 3-6M24.4–26.8" | Hanna Andersson↓ shorter | |
| 3-6m26.8" | Hatley↓ shorterLittle Sleepies↓ shorter | |
| 6-9M26.8–29.1" | None — consistent across brands | |
| 6-9m29.1" | Hatley↓ shorter | |
| 9-12M29.1–31.5" | None — consistent across brands | |
| 9-12m31.5" | Hatley↓ shorter | |
| 12-18M31.5–33.9" | Hanna Andersson↓ shorterKyte Baby↓ shorterPetite Plume↓ shorterOld Navy↓ shorterMonica + Andy↓ shorter | |
| 12-18m33.9" | ||
| 18-24M33.9–36.2" | Hanna Andersson↓ shorterKyte Baby↓ shorterMonica + Andy↓ shorterOld Navy↓ shorterHudson Baby↓ shorterMagnetic Me↓ shorter+2 more | |
| 18-24m36.2" | ||
| 24-36M36.2–38.6" | — | No same-size match at other brands |
| 2-3y38.6" | ||
| 36-48M38.6–40.9" | — | No same-size match at other brands |
| 3-4y40.9" | Ziggy Zaza↓ shorterUniqlo Kids↑ longer | |
| 4-5y43.3" | Primary↓ shorterZiggy Zaza↓ shorter | |
| 5-6y45.7" | Uniqlo Kids↑ longer | |
| 6-7y48" | None — consistent across brands | |
| 7-8y50.4" | None — consistent across brands | |
| 8-9y52.8" | None — consistent across brands | |
| 9-10y55.1" | None — consistent across brands | |
| 10-11y57.5" | None — consistent across brands | |
| 11-12y59.8" | Zara Kids↓ shorter |
In short
Where the number just works. At newborn, 6-9M, 9-12M, 24-36M, 36-48M, 6-7y and more, Mori lines up with every brand we track — the size carries straight over.
Where labels drift. The exceptions are the “strangers” above — e.g. at size 12-18m, Hatley, Quincy Mae, Rylee + Cru cut the same number differently. Check those before you trust the label.
Bottom line: for most sizes, a Mori number is a safe bet elsewhere — measure once, then double-check only the handful of “stranger” brands above.
Curious about a size that isn’t your child’s here? Every size, compared across every brand, lives here: Browse all size comparisons →
Mori makes shoes, too — see how it and every other kids’ shoe brand runs (true, big, or small) and how wide each is cut: Compare kids’ shoe sizing →
Specialty & inclusive fits
Which trimmer, roomier, or adaptive cuts Mori publishes alongside its standard sizes.
What shoppers say about the fit
Community consensus
Shopper opinion · not Little & Youth’s measurementThis is what parents report anecdotally — crowd sentiment, not a Little & Youth determination. Our sizing above is computed from Mori’s own published chart; the notes here come from public parent discussion.
Mori’s fit splits by category: the baby sleepsuits and everyday basics mostly run true to size, while the newer kids’ two-piece pajama sets run snug to small — tightest in the sleeves. Across close to 200 reviewers on Mori’s own site who commented on the fit of Mori’s own clothing, the Clever Zip sleepsuits, bodysuits, joggers and sleep bags draw ‘true to size’ most often, with a sizeable group finding them roomy and plenty sizing up on purpose for longevity, since the bamboo-and-organic-cotton fabric is stretchy and soft enough to wear long. The pajama sets are a different story, and Mori says so itself: it describes them as ‘snug-fitting’ and its Snug Fit rompers as ‘snug fit for safety’, and in 2025–26 reviews of those sets, most parents who mentioned fit said the top or sleeves were too tight, some even after going up a size. Shrinking comes up only a handful of times, once after a low tumble dry, and is outnumbered by parents saying pieces wash well. Softness is the near-universal praise; it’s mid-range on price and a frequent gift buy.
Based on anecdotal discussion from multiple publicly available online sources; your experience may differ.
Should you buy Mori?
Consider it if…
- You want very soft baby sleepwear that fits as labelled — the Clever Zip sleepsuits, bodysuits and joggers mostly draw ‘true to size’, with a stretchy bamboo-and-cotton fabric parents happily size up in for longevity.
- Your child has sensitive or eczema-prone skin — softness and breathability are the most consistent praise, and parents of eczema-prone babies single it out.
- You want roomy sleep bags and outerwear — the sleep bags and pramsuits are often described as generous, with poppers and adjustable lengths built for growth.
- You need value shoes for wide feet — the KIDLY by MORI canvas trainers and jellies fit most families true to size and are repeatedly praised for a wide toe box.
Think twice if…
- You’re buying the newer kids’ pajama sets in the usual size — Mori cuts them snug by design, and recent reviewers most often say the top and sleeves are tight; go by height and consider a size up for a solid build.
- You expect uniform sizing across prints — a recurring gripe is that the same size fits differently from one print or fabric to the next, especially ribbed versus the signature fabric.
- Your child has narrow feet — the KIDLY by MORI canvas trainers and jellies run wide, and narrow-footed kids report slipping or rubbing at the ankle.
Skip the cross-referencing — let Little & Youth do it.
Enter your child’s measurements once. We’ll show their Mori size and their size at 100+ other brands, each from that brand’s own chart.
Find my child’s size →Shop Mori ↗A few things parents ask that the chart won’t tell you
Does Mori run big or small?
It depends on the piece. Baby sleepsuits, bodysuits, joggers and sleep bags mostly fit true to size, and some find them roomy. The two-piece kids’ pajama sets are cut snug on purpose and recent reviews say they often run small, especially in the sleeves.
Should I size up in Mori pajamas?
For the two-piece kids’ sets, many parents now do — several found the top tight in the labelled size, and a few found it tight even a size up, so check the height range and lean bigger for a sturdy or tall child. For the Clever Zip sleepsuits, the usual size generally works, and sizing up just adds wear time.
Does the bamboo fabric shrink?
Rarely, going by reviews — a handful report shrinkage, one after a low tumble dry, while many more say the pieces wash well and stay soft. Follow the care label and skip the dryer to be safe.
How do KIDLY by MORI shoes fit?
Most families find them true to size with a generous width. A minority found the jelly sandals and canvas trainers short in length, so go up if your child is between sizes. They’re sized in UK sizes, so measure the foot and check Mori’s chart.
Are the shoes good for wide feet?
Generally yes — ‘too wide’ is a far more common complaint than ‘too narrow’, and parents of chunky feet often say the canvas trainers and jellies fit where other brands didn’t. Narrow-footed children may slip around in them.
What measurements do I need to size Mori accurately?
Mori publishes height, weight in its size chart. Height is the primary driver on this chart.
Where do I buy Mori?
Mori is sold on its own site and on Amazon, so you can pick the marketplace you prefer.