Léon Cotton Shirt - Boy
Age & Height Reference
| Age | 2-3 | 3-4 | 4-5 | 5-6 | 6-7 | 7-8 | 8-9 | 9-10 |
|---|---|---|---|---|---|---|---|---|
| Height (cm) | 88–98 | 98–104 | 104–110 | 110–116 | 116–122 | 122–128 | 128–134 | 134–140 |
| Weight (kg) | 12–15 | 15–17 | 17–20 | 20–22 | 22–25 | 25–28 | 28–31 | 31–35 |
If your child is between two sizes or on the taller side, we recommend choosing the size up. For example, a tall 4-year-old should wear 5-6.
Garment Measurements (cm)
| 2-3 | 3-4 | 4-5 | 5-6 | 6-7 | 7-8 | 8-9 | 9-10 | |
|---|---|---|---|---|---|---|---|---|
| Length | 43 | 45.5 | 48 | 50.5 | 53 | 55.5 | 58 | 60.5 |
| Chest | 62 | 66 | 70 | 74 | 78 | 82 | 86 | 90 |
| Sleeve | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
Our kids sizing runs true to age. If your child is tall for their age or between two sizes, we recommend sizing up. ROMIMI pieces are designed with room to grow.
Chest: measure around the fullest part. Waist: measure at your natural waist. Length: from the highest point of the shoulder to the hem.
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One for you, one for him


Ships together, one order
Top and bottom, sized your way


Ships together, one order
Both sets — 4 pieces, dad and son




Ships together, one order
Order within 20h 5m to get your order shipped today.
Made for the next generation, the Léon Cotton Shirt brings ROMIMI's refined ease down to a smaller scale. Knitted from a soft ribbed cotton, it keeps little ones comfortable through warm days while carrying the same craft as its adult version. The open kimono-style V-neckline and sky-blue contrast piping give it a playful, sporting character, and a discreet Romimi monogram sits quietly at the upper back. Relaxed and easy to move in, it's built for real childhood worn on its own or with the matching Léon Cotton Short, and made to pair perfectly with dad's.
Key Details:
- Soft Ribbed Cotton Knit
- Relaxed, Easy-Move Fit
- Open Kimono-Style V-Neckline
- Sky-Blue Contrast Piping — neckline, raglan seams, sleeve cuffs
- Clean Front — no buttons, no pockets
- Short Sleeve Construction
- ЯR Monogram at Upper Back
- Part of the Léon Cotton Set (matches Léon Cotton Short)
- Perfect Matching Piece for Father-Son Sets
- Composition: 95% Cotton, 5% Elastane
- Colour: Navy/Sky
Model is 119 cm and 24KG wearing size 6-7. Regular fit — if between sizes, we recommend sizing up.
Shipping
Free shipping over €100.
International shipping to 50+ countries. 1-3 day processing, fully tracked.
EU: 3-7 days · US/CA/AU: 3-7 days
Questions? contact@romimi.com
Returns
14-day easy returns. Items must be unworn with all tags attached. Original packaging required.
Father-Son sets: Partial returns accepted (refund calculated proportionally).
Start your return at https://romimi.com/a/service
Questions? contact@romimi.com
Size sold out?
What fathers say
Rated 4.7 out of 5 on TrustpilotPerfect matching sets for fathers and sons
The quality is truly outstanding — you can feel it the moment you put it on. My son absolutely loves when we match, and Romimi makes those moments effortless and special.
Exceeded expectations!
I thought it would be just a typical tracksuit, especially at the sale price. Boy was I mistaken — the quality and fabric are top tier and it looks so good on.
Compliments nonstop
Honestly super happy with my order. Everyone asking where I got the matching kimono with my son. We love it.
Style and legacy all in one
The build, structure and overall finish of the jackets feel and look premium. It's rare to find a brand that combines meaning with true quality craftsmanship.
The quality is on another level
The quality, texture is on another level. I get compliments everywhere I go.
Beautiful suit
It was a gift for my husband. He loves it! The fabrics are super, the color is beautiful — even better than the photos.
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