--- product_id: 685588409 title: "100% Merino Wool Base Layer Kids Thermal Underwear Set & Kids Beanie Hat" brand: "merino.tech" price: "¥28322" currency: JPY in_stock: true reviews_count: 13 category: "Merino.Tech" url: https://www.desertcart.jp/products/685588409-100-merino-wool-base-layer-kids-thermal-underwear-set-kids store_origin: JP region: Japan --- # 250 GSM medium weight warmth, perfect layering 100% superfine merino wool, 17.5 micron softness Machine washable, easy wool care 100% Merino Wool Base Layer Kids Thermal Underwear Set & Kids Beanie Hat **Brand:** merino.tech **Price:** ¥28322 **Availability:** ✅ In Stock ## Summary > 🧣 Stay warm, stay fresh, stay ahead—merino wool that works as hard as your kid does! ## Quick Answers - **What is this?** 100% Merino Wool Base Layer Kids Thermal Underwear Set & Kids Beanie Hat by merino.tech - **How much does it cost?** ¥28322 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/685588409-100-merino-wool-base-layer-kids-thermal-underwear-set-kids) ## Best For - merino.tech enthusiasts ## Why This Product - Trusted merino.tech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Next-Level Softness:** Ultra-fine 17.5 micron merino wool feels smooth on bare skin—no itch, all comfort. - • **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 with no shrinkage—durability backed by Merino.tech Promise. - • **Odor-Resistant & Sweat-Wicking:** Merino wool naturally fights odor and moves moisture, so kids stay fresh through adventures. - • **Versatile Warmth for Every Winter Day:** 250 GSM fabric keeps kids warm solo or layered for school runs and ski slopes alike. ## Overview This 100% superfine merino wool kids thermal set includes a long sleeve top, bottoms, and a matching beanie, all crafted at 250 GSM for optimal warmth and layering flexibility. Designed for comfort with ultra-soft 17.5 micron fibers, it naturally resists odor and wicks moisture, making it perfect for active kids from school days to outdoor adventures. Easy-care machine washable fabric maintains shape and softness, ensuring a durable, high-performance base layer that parents trust and kids love. ## Description desertcart.com: 100% Merino Wool Base Layer Kids Thermal Underwear Set & Kids Beanie Hat (6-7 Years, Charcoal Grey) : Sports & Outdoors Review: Soft and warm - I realize that some people pass these up because of the price. I also realize I could buy regular cotton thermals for a lot less money but nothing beats a good pair of thermals. When I take my kid hunting and ice fishing I want him to stay as warm as possible without sweating. Nothing is worse then hiking to a hunting spot and sitting down and getting cold because my kid or myself broke a sweat on the hike out because we had to many base layers on or base layers that were all wrong. I learned very fast that merino wool socks keep my feet dry and warm and the merino thermal underlayment was just as good and if I didn't cheap out and buy a mixed material I would find these things just as good for my son. He is 8 years old and these things are the best! We have went ice fishing and he never complained about being cold. We sat on an all day deer hunt and he didn't complain once about being cold. The material is lightweight but keeps him warm and dry. They fit him perfectly. I am very happy with the purchase! Review: Great quality, had to size up though - The price for this set was so much better than any other wool set and it’s wonderful! It’s very comfortable and warm. I bought the smallest size for my 3year old and it’s a little long but still fits him just fine. Wool is usually tight anyways but I had to go up a size for my 6 year old, the size recommended was way too tight on him. ## Features - Three Pieces in One Box: Long sleeve top, bottoms and a matching kids wool beanie make a complete kids thermals top and bottom set that arrives ready to give as a birthday or holiday gift - Soft Enough for Every Day: At 17.5 micron merino feels smooth on bare skin with no itch and stays thin under a uniform, so this merino wool kids set gets worn to school as well as on the trail or bunching of regular cotton. - One Weight, Both Ends of Winter: At 250 GSM it is warm alone under jeans and thin enough to layer, so a kids long underwear set on the school run becomes a kids ski base layer set on the slopes - Wear It Days in a Row: Merino resists odor as it works and moves sweat out rather than holding it, so a thermal set for kids handles hiking and camping between washes as merino wool travel clothing - Wool Care Made Simple: Machine wash at 30 C on the wool cycle in a laundry bag and hang to dry; no bleach or softener, so kids wool long johns and this youth merino wool base layer keep shape, backed by the Merino.tech Promise ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DB82WC5F | | Age Range Description | Big Kid | | Apparel Closure Type | Pull On | | Apparel Fabric Stretch | Medium Stretch | | Apparel Fabric Weight Class | Medium Weight | | Best Sellers Rank | #106,752 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #13 in Boys' Thermal Underwear Sets | | Brand Name | Merino.tech | | Care instructions | Machine Wash (Delicate Cycle), Hand Wash Recommended | | Collection Name | All | | Color | Charcoal Grey | | Customer Reviews | 4.3 out of 5 stars 221 Reviews | | Fabric Type | 100% Superfine Merino Wool | | 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 Part Number | KST-250 | | Material Type | 100% Superfine Merino Wool | | Neck Style | Crew Neck | | Number of Items | 1 | | Origin | Imported | | Package Quantity | 1 | | Pattern | Solid | | Product Care Instructions | Machine Wash (Delicate Cycle), Hand Wash Recommended | | Size | 6-7 Years | | Sleeve Length Description | Long Sleeve | | Sleeve Type | Long Sleeve | | Style Name | Modern | | Style Number | KST-250 | | Unit Count | 1 Count | ## Images ![100% Merino Wool Base Layer Kids Thermal Underwear Set & Kids Beanie Hat - Image 1](https://m.media-amazon.com/images/I/61rZD3lP-HL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Is this only for winter, or can kids wear it year-round?** A: 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. **Q: How do I wash and dry it to keep it looking new ? Will it shrink or lose shape?** A: 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 **Q: How do I choose the right size? Do the top and bottom fit the same?** A: 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. **Q: Won't merino wool feel itchy? And what does 17.5 micron mean?** A: 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. **Q: Where does the merino wool sourced from and is this product certified?** A: 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Soft and warm *by D***B on April 17, 2025* I realize that some people pass these up because of the price. I also realize I could buy regular cotton thermals for a lot less money but nothing beats a good pair of thermals. When I take my kid hunting and ice fishing I want him to stay as warm as possible without sweating. Nothing is worse then hiking to a hunting spot and sitting down and getting cold because my kid or myself broke a sweat on the hike out because we had to many base layers on or base layers that were all wrong. I learned very fast that merino wool socks keep my feet dry and warm and the merino thermal underlayment was just as good and if I didn't cheap out and buy a mixed material I would find these things just as good for my son. He is 8 years old and these things are the best! We have went ice fishing and he never complained about being cold. We sat on an all day deer hunt and he didn't complain once about being cold. The material is lightweight but keeps him warm and dry. They fit him perfectly. I am very happy with the purchase! ### ⭐⭐⭐⭐⭐ Great quality, had to size up though *by J***L on October 18, 2025* The price for this set was so much better than any other wool set and it’s wonderful! It’s very comfortable and warm. I bought the smallest size for my 3year old and it’s a little long but still fits him just fine. Wool is usually tight anyways but I had to go up a size for my 6 year old, the size recommended was way too tight on him. ### ⭐⭐⭐⭐⭐ Awesome *by J***N on February 18, 2026* Bought these for my son and man he said he was realy warm even on an extremely cold day. Fit was tiny but big even in the smallest size but fine cause he can use for multiple years. Incredibly soft and feels great to wear! --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/685588409-100-merino-wool-base-layer-kids-thermal-underwear-set-kids](https://www.desertcart.jp/products/685588409-100-merino-wool-base-layer-kids-thermal-underwear-set-kids) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-06*