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.

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

Which weight should I choose — 165, 250, or 320 g/m²?

165 g/m² — active pursuits, travel, spring/summer, 40–60°F. 250 g/m² — cold weather, most outdoor activities, 25–45°F. 320 g/m² — frost and low activity, 10–35°F, extreme conditions. Rule: the higher the activity level — the lighter the weight.

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.

Does it fit true to size?

Choose your regular size if you prefer slim fit. For more relaxed fit order size up

100 Merino Wool Base Layer Men Set Thermal Underwear Mens

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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AR$520254

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Argentina.

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Description

🧗‍♂️ Elevate your base layer game — stay fresh, warm, and unstoppable!

ODOR FREE MULTI DAY WEAR - Natural moisture-wicking and odor resistance means you stay fresh even on extended trips or busy days.
ALL DAY COMFORT ZERO ITCH - Ultra-soft superfine Merino wool keeps you cozy without irritation, perfect for long wear.
BONUS HIKING SOCKS INCLUDED - Step up your outdoor game with premium Merino wool socks, enhancing comfort and durability on every adventure.
EFFORTLESS CARE DURABILITY - Machine washable with lifetime warranty—built to last and maintain performance wash after wash.
YEAR ROUND TEMPERATURE CONTROL - Midweight 250 g/m² fabric adapts to your body heat, keeping you warm in winter and cool in summer.

This 100% superfine Merino wool midweight base layer set for men includes a long sleeve top, long johns (250 g/m²), and premium Merino hiking socks. Designed for superior thermal regulation, moisture-wicking, and odor resistance, it offers all-day comfort without itch. Ideal for year-round wear, travel, and outdoor activities, it combines durability with easy care and comes backed by a lifetime warranty.

Specifications

ASIN	B09C4VW4YP
ASIN	B0HJCPCDLJ
Age Range Description	Adult
Apparel Fabric Stretch	Medium Stretch
Apparel Fabric Weight Class	Medium Weight
Best Sellers Rank	17,304 in Fashion ( See Top 100 in Fashion ) 8 in Men's Thermal Sets
Brand Name	Merino.tech
Closure Type	Pull On
Colour	.250 Black Set
Country Of Origin	China
Customer Reviews	4.6 4.6 out of 5 stars (3,381)
Customer reviews	4.6 4.6 out of 5 stars (3,381)
Date First Available	10 Sept. 2026
Fabric Type	100% Wool
Fit Type	Regular
Fit to Size Sentiment	Fits True To Size
Garment Size Country	United States
Global Trade Identification Number	08062281015526
Import Designation	Imported
Item Type Name	Base Layer Set
Manufacturer	Merino.tech
Manufacturer	Merinos USA
Manufacturer Part Number	MST-250
Material Type	Wool
Model Number	MST-250
Neck Style	Crew Neck
Number of Items	1
Pattern	Solid
Product Care Instructions	Machine Wash (Delicate Cycle), Hand Wash Recommended
Season and Collection Year	Baselayer
Size	L
Sleeve Length Description	Long Sleeve
Sleeve Type	Long Sleeve
Style Name	Modern/Fitted
Unit Count	3.0 count
item-package-quantity	1

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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AR$520254

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Argentina.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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100% Merino Wool Base Layer Men Set - Thermal Underwear Mens + Hiking Socks

Description

Specifications

Common Questions