Kids' 250 Thermal Long Sleeve Top Navy Blue

4.9

Rated 4.9 out of 5 stars

29

$59.95

New

Midweight

Thermal Wear

Kids' 250 Thermal Long Sleeve Top Navy Blue

4.9

Rated 4.9 out of 5 stars

29

$59.95

Fabric: 250 Mid Layer

250 Mid Layer

160 Base Layer

⛟ Free Shipping over $99 & Easy 30-Day Returns

Features

Merino Wool

Hypoallergenic

Moisture-Wicking

Stain Resistant

Temperature Balance

Unisex Design

Description

Cold mornings are easier with a soft, warm layer close to the skin. This kids’ 250gsm Merino wool long sleeve top fits comfortably beneath winter clothing, keeping kids' arms and body covered without restricting play. Naturally breathable, kids' Merino top helps them stay comfortable as they move from outdoor adventures to heated rooms.

Made from 100% Merino wool for soft everyday comfort.
Midweight 250gsm fabric adds warmth beneath winter layers.
Long sleeves keep little arms covered on chilly days.
Helps balance body temperature as activity levels change.
Manages moisture when play gets energetic.
Naturally resists odors for less frequent washing.
Easy to wear with leggings, trousers, or matching thermal bottoms.

Fabric & care

Composition: 100% Virgin Merino wool

Fabric construction: Interlock

Weight: Midweight, 250 g/m²

Made from midweight Merino wool in a durable interlock knit, this garment provides extra warmth and a more substantial feel than lightweight layers. Ultra-soft (17.5–18.5 µm) and naturally insulating, it is ideal for colder conditions, winter layering, and low-to-mid intensity activities.

Machine wash at 30°C on a gentle wool cycle (max. 800 rpm) with similar colors.
Do not bleach or use fabric softeners.
Iron at low temperature if needed.
Do not dry clean to avoid fabric damage.
Gently reshape and dry flat, away from direct sunlight and heat. Do not tumble dry.

Merino wool naturally resists odors, so washing after every wear isn't necessary. For more tips on caring for your Merino wool, explore our Care Guide.

Delivery & return

U.S. shipping

Most in-stock items ship within 24 hours of payment, Monday through Friday.

Method	Cost (USD)	Transit time (business days)
Standard	Free on $99+ $4.95 otherwise	5–12
Expedited	Free on $249+ $14.95 otherwise	3–5
Express	$19.95	1–3

Choose your shipping method at checkout. No additional customs duties at delivery.

Transit times are estimates after shipping and exclude processing. Carrier delays may affect delivery. See our shipping policy for details.

30-day returns and exchanges

We offer a 30-day return period from the delivery date for refunds or exchanges.

Please note: For hygiene reasons, we cannot accept returns or exchanges on opened intimate items (including thongs, bikini panties, boxer shorts, and socks) unless the item is defective.

Need help choosing your size?

Check the product’s size guide before ordering.
If you’re unsure, contact us for sizing advice so you can choose your size with confidence.

Complete the look

Three young girls run playfully hand-in-hand through a grassy field with a rustic white fence in the background. They are wearing form-fitting, long-sleeve thermal sets in solid black, beige, and red colors.

Four children in matching green outfits sitting on the ground in a forest.

Can Be Worn Everywhere

FROM INDOOR PLAYS TO OUTDOOR ADVENTURES

Merino adapts to you – breathable in the heat, insulating in the cold, and always ready for wherever life takes you. Whether you're in need of pajamas or heading to the great outdoors, this is all-day, everyday comfort.

A joyful young girl relaxes in a large olive-green beanbag chair while wearing a light pink long-sleeve thermal top and leggings. She has one leg raised playfully in the air as she pulls on a matching pink ankle sock.

Softer Than Traditional Wool

COMFORT WITHOUT THE ITCH

Forget the scratchy wool of the past. Finer, softer, and smoother against the skin, it delivers all the warmth and comfort you need with none of the irritation. Finished with flatlock seams for an even smoother feel.

Responsibly sourced from Australia

PURE MERINO, UNCOMPROMISING QUALITY

From the vast open landscapes of Australia comes the world’s finest Merino wool – ethically sourced, carefully spun, and crafted into garments that redefine luxury and performance.

A pair of hands gently stretches and pulls apart a soft clump of raw, bright white, unspun wool. The delicate, stringy texture of the natural fibers is clearly visible against a warmly lit, softly blurred background.

Sheep grazing in a field with mountains in the background

Nature’s Best, Nothing Less

ECO-FRIENDLY CHOICE 100% MERINO

Merino wool is nature’s masterpiece – biodegradable, renewable, and responsibly sourced. A fabric that keeps you warm without harming the planet, making sustainability a part of your everyday wear.

	Chest 1/2	Chest 1/2	Sleeve length	Sleeve length	Length	Length	Hem width 1/2	Hem width 1/2
6-12 months	26	10.2	32.5	12.8	34.5	13.6	25.5	10
1-2 years	27.5	10.8	36	14.2	37.5	14.8	27	10.6
3-4 years	29	11.4	39.5	15.6	40.5	15.9	28.5	11.2
4-5 years	30.5	12	43	16.9	43.5	17.1	30	11.8
6-7 years	32	12.6	46.5	18.3	46.5	18.3	31.5	12.4
8-9 years	33.5	13.2	50	19.7	49.5	19.5	33	13
10-12 years	35	13.8	53.5	21.1	52.5	20.7	34.5	13.6

	Height	Height	Weight	Weight
6-12M	74-80	29-31.5	9-11 kg	20-24 lbs
1-2Y	86-92	34-36	12-14 kg	26-31 lbs
3-4Y	98-104	38.5-41	15-18 kg	33-40 lbs
4-5Y	110-116	43-45.5	19-22 kg	42-49 lbs
6-7Y	122-128	48-50.5	24-28 kg	53-62 lbs
8-9Y	134-140	53-55	30-36 kg	66-79 lbs
10-12Y	146-152	57.5-60	37-45 kg	81-99 lbs
12-14Y	158-164	62-64.5	46-55 kg	101-121 lbs

Age	US	Height, cm	Height, in	Chest	Waist	Hips
6-12 mos.	12M	74-80	29-31	49-52cm 20-21”	46-48cm 18-19”	50-53cm 19-20.5”
1-2 yrs.	2T	86-92	34-36	52-55cm 21-22”	48-50cm 19-20”	53-56cm 20.5-22”
2-3 yrs.	3T	98-104	39-41	55-58cm 22-23”	50-52cm 20-21”	56-59cm 22-23.5”
4-5 yrs.	5	110-116	43-46	58-61cm 23-24”	53-55cm 21-22”	59-62cm 23.5-25”
6-7 yrs.	7	122-128	48-50	61-64cm 24-25”	56-58cm 22-23”	62-65cm 25-26.5”
8-9 yrs.	8	134-140	53-55	64-67cm 25-26”	59-61cm 23-24”	65-68cm 26.5-27”
10-12 yrs.	10-12	146-152	57-60	67-70cm 26-27”	62-64cm 24-25”	68-71cm 27-28.5”
12-14 yrs.	12-14	158-164	62-65	70-73cm 27-28”	65-67cm 25-26”	71-74cm 28.5-30”

Currency

Kids' 250 Thermal Long Sleeve Top Navy Blue