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Altitude Merino 185 Base Layer – Men’s Performance Shirt

Original price was: $69.95.Current price is: $27.98.

-60%

Experience comfort and breathability with the best merino wool base layer for hiking.

(3 customer reviews)

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Men's Altitude Merino 185 base layer top worn during a sunny hike, showcasing comfort and style.
Altitude Merino 185 Base Layer – Men’s Performance Shirt
$69.95 Original price was: $69.95.$27.98Current price is: $27.98.

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The Altitude Merino 185 Base Layer is your go-to choice for outdoor adventures. Made with ultrafine 185 g merino wool, this shirt provides a soft feel that removes the itchiness commonly found in other fabrics. It’s designed for versatility, making it suitable for hiking, biking, or even relaxing at home.

This men’s base layer top features:

  • 100% merino wool that breathes, wicks away sweat, and dries quickly.
  • Natural odor-resistance for long-lasting freshness, ideal for multi-day trips.
  • UPF 30 sun protection to shield you from harmful UV rays.
  • Flat seams and merrow stitch construction that eliminate chafing.
  • Underarm gussets for enhanced mobility.

Weighing just 6 oz, this lightweight performance thermal shirt is perfect for all your outdoor activities — whether you’re hiking, running, climbing, or camping. Plus, it’s machine washable, ensuring easy care.

Additional information

colors: No selection

RED RIVER CLAY, OAK BROWN, BLACK

sizes: No selection

S, M, L, XL, XXL, XXXL

3 reviews for Altitude Merino 185 Base Layer – Men’s Performance Shirt

  1. Daniel Gates (verified owner)

    Absolutely love this merino wool base layer! It’s so breathable and keeps me dry during long hikes. Highly recommend it!

  2. Lynn Bush (verified owner)

    Finally found my go-to shirt for all outdoor activities! The Altitude Merino 185 is lightweight and odor-resistant. Perfect for multi-day adventures!

  3. Casey Ruiz (verified owner)

    This is a great performance thermal shirt. It fits well and allows for easy movement. I’ll definitely be buying more colors!

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FAQs

How to care for the Altitude Merino 185 Base Layer?
Machine wash warm on a gentle cycle with a wool wash product. Do not bleach or dry clean. Tumble dry on low and remove promptly.
What makes this a top-rated breathable hiking shirt?
The Altitude Merino 185 combines ultrafine merino wool for moisture management and natural odor resistance, making it perfect for strenuous activities.
Where can I buy a men's performance thermal shirt?
You can easily buy the men's performance thermal shirt online through our store, or visit any REI Co-op location.