Is this only for winter, or can kids wear it year-round?

Merino thermoregulates in both directions — warm from 40°F down to 5°F (-15°C) for skiing and ice skating, yet breathable enough for school, cycling, spring hikes and everyday wear. Odor-resistant and soft enough for all-day use without irritation.

How do I wash and dry it to keep it looking new ? Will it shrink or lose shape?

Machine wash cold max 30°C, delicate cycle, inside out. Lay flat to dry — tumble drying permanently damages merino fibers. Store clean and dry; keep merino in sealed bags to prevent moths. Wear 3–5 days between washes — merino resists odor naturally

How do I choose the right size? Do the top and bottom fit the same?

Yes — top and bottom always come in the same size. Sizes are by age: 4-5, 6-7, 8-9, 10-12, and 13-14 years. If your child is tall for their age or has a longer torso, size up — bottoms run snug, so going larger ensures comfortable movement.

Won't merino wool feel itchy? And what does 17.5 micron mean?

17.5 micron superfine merino fibers are finer than human hair — too fine to feel itchy, even on sensitive skin. Standard wool (25+ microns) causes irritation; this doesn't. OEKO-TEX certified, tested against 100+ harmful substances.

Where does the merino wool sourced from and is this product certified?

Our products are made from Australian merino wool, RWS certified — independent farm audit confirming animal welfare and land management standards. Every component tested against 100+ harmful substances under OEKO-TEX Standard 100.

100 Merino Wool Base Layer Kids Thermal Underwear Set Kids

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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¥28055

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧣 Elevate your kid’s winter game with the ultimate merino wool base layer set!

COMPLETE 3 PIECE THERMAL SET - Long sleeve top, bottoms, and matching beanie—ready to gift and go.
EFFORTLESS CARE LASTING FIT - Machine washable on wool cycle, retains shape and softness backed by Merino.tech Promise.
STAY FRESH LONGER WASH LESS - Natural odor resistance and sweat-wicking let kids wear it multiple days—ideal for active lifestyles.
EVERYDAY SOFTNESS MEETS PERFORMANCE - Ultra-fine merino wool feels smooth on skin with zero itch, perfect under school uniforms or outdoor gear.
VERSATILE WARMTH FOR ALL WINTER DAYS - Medium-weight 250 GSM fabric keeps kids cozy solo or layered for slopes and trails.

This 3-piece kids thermal underwear set from Merino.tech features 100% superfine 17.5 micron merino wool at 250 GSM, delivering breathable warmth and itch-free comfort. Designed for ages 10-12, it includes a long sleeve top, bottoms, and a matching beanie, perfect for school days or outdoor adventures. The fabric’s natural odor resistance and moisture-wicking properties allow extended wear between washes, while easy machine care ensures durability and shape retention.

Specifications

ASIN	B0DB83R32W
ASIN	B0DB695W25
Age Range Description	Big Kid
Apparel Closure Type	Pull On
Apparel Fabric Stretch	Medium Stretch
Apparel Fabric Weight Class	Medium Weight
Best Sellers Rank	#132,834 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #20 in Boys' Thermal Underwear Sets
Brand Name	Merino.tech
Collection Name	All
Color	Violet Purple
Customer Reviews	4.3 4.3 out of 5 stars (225)
Date First Available	July 25, 2024
Department	boys
Fabric Type	100% Superfine Merino Wool
Fit Type	Regular
Fit to Size Sentiment	Fits True To Size
Garment Size Country	United States
Import Designation	Imported
Item Type Name	Base Layer Set
Manufacturer	Merino.tech
Manufacturer Part Number	250
Material Type	100% Superfine Merino Wool
Neck Style	Crew Neck
Number of Items	1
Package Quantity	1
Pattern	Solid
Product Care Instructions	Machine Wash (Delicate Cycle), Hand Wash Recommended
Size	10-12 Years
Sleeve Length Description	Long Sleeve
Sleeve Type	Long Sleeve
Style Name	Modern
Style Number	250
Unit Count	3 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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