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.Customs & duties included in the price

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S$211

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Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧗‍♂️ Elevate your base game—comfort, performance, and style that won’t quit!

ODOR FREE MULTI DAY WEAR - Natural moisture-wicking and odor resistance keep you fresh on back-to-back adventures.
ALL DAY COMFORT ZERO ITCH - Ultra-soft superfine Merino wool keeps you cozy without irritation or overheating.
EFFORTLESS CARE DURABILITY - Machine washable with lifetime warranty—built to last through every season and journey.
YEAR ROUND TEMPERATURE CONTROL - Midweight 250 g/m² fabric expertly regulates your body heat in any climate.
COMPLETE BASE LAYER SET SOCKS - Includes matching long sleeve top, long johns, and premium hiking socks for head-to-toe performance.

This 100% superfine Merino wool midweight base layer set for men features a long sleeve top and long johns at 250 g/m², delivering superior thermal regulation and moisture management. Included premium Merino wool hiking socks add extra value and comfort. Designed for all-season wear, it offers itch-free softness, odor resistance, and durability backed by a lifetime warranty—perfect for active professionals who demand performance and style in every layer.

Specifications

ASIN	B09T6NPK1P
ASIN	B0HHD4D5H5
Age Range Description	Adult
Apparel Fabric Stretch	Medium Stretch
Apparel Fabric Weight Class	Medium Weight
Best Sellers Rank	56,704 in Fashion ( See Top 100 in Fashion ) 24 in Men's Thermal Sets
Brand Name	Merino.tech
Closure Type	Pull On
Colour	250 Deep Teal Set
Customer Reviews	4.5 4.5 out of 5 stars (52)
Customer reviews	4.5 4.5 out of 5 stars (52)
Date First Available	28 Aug. 2026
Department	Men's
Fabric Type	100% Wool
Fit Type	Regular
Fit to Size Sentiment	Fits True To Size
Garment Size Country	United States
Item Type Name	Base Layer Set
Item model number	MST-250
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	All
Size	S
Sleeve Length Description	Long Sleeve
Style Name	Modern/Fitted
Unit Count	2.0 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.

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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.

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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.

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