Kids Merino Base Layers | Smalls Merino at the bonnie mob

Smalls Merino Kids

Merino base layers for children, sized 2-3 years to 13-14 years. Long sleeve tops, tanks, polo necks and the 24 Hour Trouser — the layer that goes under a ski suit, under a school jumper on a cold morning, or straight to bed. 17.5 micron ultrafine merino, with none of the prickle people remember from old wool vests.

Merino for children, and why it is worth it

The layer that solves the cold-morning argument. A merino long sleeve under a school jumper does more than a second fleece, and takes up none of the room. It regulates temperature, so the child who is freezing at the bus stop is not boiling by second lesson.

Ski base layers that actually fit under a suit. Long sleeve top and the 24 Hour Trouser, thin enough to layer without bulk and warm enough to sit on a chairlift in. They move moisture away from the skin, so there is no clammy chill at the bottom of the run.

Good to sleep in. Merino holds a steady temperature through the night. For a child who kicks the covers off at two in the morning, it is the difference between waking up and staying asleep.

It does not itch, and it does not smell. At 17.5 micron this is ultrafine merino, not the scratchy wool of school vests. It also resists odour, so a top can be worn several days running and aired rather than washed. On a week away that matters.

Sizes 2-3 to 13-14 years. Unisex, in grey marle, midnight, French navy, emerald green, chocolate brown, ivory and pink peach blossom. ZQ-certified New Zealand wool, spun in Biella and made up in Portugal.

Kids merino base layers — thermal tops, tanks, polo necks, leggings and snoods for skiing, school and sleep. By Smalls, at the bonnie mob.

FAQ's

What age range does this cover?

2-3 years through to 13-14 years. The snoods come in a kids size and an adult size.

Are these good ski base layers for children?

Yes — a long sleeve top and the 24 Hour Trouser is the pairing. They sit flat under a ski suit, keep warmth in on the lift, and move moisture away so nobody gets a clammy chill on the way down.

Will it itch?

No. The itch people remember comes from coarse wool. This is 17.5 micron ultrafine merino, soft enough to wear next to the skin and to sleep in, and kind to sensitive skin.

Can they wear it in bed?

Yes, and plenty of parents buy it for exactly that. Merino holds a steady temperature overnight, which suits a child who throws the covers off.

How often does it need washing?

Far less than cotton. Merino resists odour, so airing overnight is usually enough. When it does need a wash it is machine washable at 30 on a wool cycle — dry it flat, never tumble dry.

Is it unisex?

Yes. The cuts and colours work for any child.

Where is it made?

The wool is ZQ-certified New Zealand merino, spun at an EMAS-certified mill in Biella, Italy, and made up at a family-run factory in Portugal.

Let customers speak for us

from 1104 reviews

Just discovered this shop and love the attention to detail and care that goes into the clothes. I ordered some baby cashmere in the sale and am really impressed with quality and value.

09/21/2026

Adorable soft jumper. Very pleased with the quality and the design is so sweet. I would size up if in doubt, my son is 5 months and the 6-9 month fits well.

09/21/2026

Rusty Mushroom Organic Cotton Cashmere Knit Baby & Kids Sweater

Beautifully made dress, so pretty but also comfy and practical and perfect for in-between weather! My daughter loves it.

Matt Brennan

08/22/2026

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Beautiful feel to this bodysuit and the design is exactly what you'd expect from the brilliant Bonnie Mob!

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07/16/2026

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Lovely clothes

Laura M

04/16/2026

Loved these shorts last summer so bought size up this year, little one was delighted when they arrived and wanted to wear them right away. Comfy and she loves the pockets and bright pink colour. Super cheerful

Martha

04/14/2026

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EXCELLENT

Anonymous

03/06/2026

Very charming!

Anonymous

03/04/2026

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I shopped at thebonniemob with ease and love the products.

Anonymous

02/14/2026

Very happy with this lovely cardigan for my granddaughter.

Anonymous

02/14/2026

Rainbow Organic Cotton Knit Baby & Kids Cardigan

A gorgeous little coat. It’s an excellent fit and very cosy.

Claire F

01/19/2026

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The sweetest little dress. My granddaughter loves it and it’s beautifully cut and well made.

Claire F

01/19/2026

Mushroom Fleece Baby & Kids Organic Dress

I’m really impressed with the baby clothes I bought from Bonnie Mob! The organic cotton feels incredibly soft and gentle on my baby’s skin — you can truly feel the quality the moment you touch it. The fabric is well-made and durable, even after a few washes, and the designs are absolutely adorable. You can tell the difference compared to many other brands — Bonnie Mob clothes just feel more premium, comfortable, and thoughtfully made. Definitely one of my new favourites for babywear! 👶💛

FADLY(Malaysia)

11/20/2025