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10 Best merino wool base layers of 2025

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  • Best Choice

    1

    Smartwool SW016361001S Men's Merino 250 Baselayer Bottom Black S
    Smartwool

    Smartwool SW016361001S Men's Merino 250 Baselayer Bottom Black S

    9.9
    Exceptional
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  • Value for Money

    2

    Merino.tech Merino Wool Base Layer Mens Set - Heavyweight, Midweight, Lite Merino Wool Thermal Underwear For Men Top, Bottom (Large, 250 Black)
    Merino.tech

    Merino.tech Merino Wool Base Layer Mens Set - Heavyweight, Midweight, Lite Merino Wool Thermal Underwear For Men Top, Bottom (Large, 250 Black)

    • Fit:Superfine 17.5 Micron
    • Insulation:Midweight 250 g/m²
    • Breathability:Regulates body temperature
    • Material:Merino wool
    • Moisture Wicking:Yes, natural wicking
    9.7
    Exceptional
    Our Rating

  • 3

    Merino.tech Merino Wool Base Layer Women Set - Heavyweight, Lite, Midweight Merino Thermal Underwear For Women Top, Bottom (Large, 250 Black)
    Merino.tech

    Merino.tech Merino Wool Base Layer Women Set - Heavyweight, Lite, Midweight Merino Thermal Underwear For Women Top, Bottom (Large, 250 Black)

    9.6
    Exceptional

  • 4

    Merino.tech Merino Wool Base Layer Women - 100% Merino Wool Heavyweight, Midweight, Lite Long Sleeve Thermal Shirt and Socks (Small, 165 Charcoal)
    Merino.tech

    Merino.tech Merino Wool Base Layer Women - 100% Merino Wool Heavyweight, Midweight, Lite Long Sleeve Thermal Shirt and Socks (Small, 165 Charcoal)

    • Fit:Lightweight, Midweight, Heavyweight
    • Temperature Regulator:Yes, all year comfort
    • Insulation:Lightweight 165 g/m²
    • Odor Resistance:Yes, odor-resistant
    • Breathability:Yes, no overheating
    9.5
    Excellent
    Our Rating

  • 5

    Merino.tech Merino Wool Base Layer - Mens 100% Merino Wool Long Sleeve Thermal Shirts Heavyweight, Midweight, Lite with Socks (X-Large, Black 250)
    Merino.tech

    Merino.tech Merino Wool Base Layer - Mens 100% Merino Wool Long Sleeve Thermal Shirts Heavyweight, Midweight, Lite with Socks (X-Large, Black 250)

    • Fit:Super Soft & Comfortable
    • Insulation:Midweight 230-250 g/m
    • Breathability:Regulates body temperature
    • Material:Merino Wool
    • Moisture Wicking:Yes, absorbs moisture
    9.4
    Excellent
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  • 6

    Merino Wool Base Layer Mens - 100% Merino Wool Shirts for Men Thermal Underwear Long Sleeve T-Shirt for Hiking Hunting (Large, 190 Charcoal Grey)
    Merino.tech

    Merino Wool Base Layer Mens - 100% Merino Wool Shirts for Men Thermal Underwear Long Sleeve T-Shirt for Hiking Hunting (Large, 190 Charcoal Grey)

    9.2
    Excellent

  • 7

    Merino Wool Base Layer Women Pants 100% Merino Wool Leggings Heavyweight, Midweight, Lite Thermal Underwear Bottom and Socks (Medium, Black)
    Merino.tech

    Merino Wool Base Layer Women Pants 100% Merino Wool Leggings Heavyweight, Midweight, Lite Thermal Underwear Bottom and Socks (Medium, Black)

    9.1
    Excellent
    Our Rating

  • 8

    MERIWOOL Mens Base Layer - 100% Merino Wool Midweight Long Sleeve Thermal Shirt Charcoal Gray
    MERIWOOL

    MERIWOOL Mens Base Layer - 100% Merino Wool Midweight Long Sleeve Thermal Shirt Charcoal Gray

    8.8
    Very Good

  • 9

    Merino Wool Base Layer Mens Bottom Pants 100% Merino Wool Heavyweight, Midweight, Lite Thermal Underwear Long Johns and Socks (X-Large, 165 Charcoal Grey)
    Merino.tech

    Merino Wool Base Layer Mens Bottom Pants 100% Merino Wool Heavyweight, Midweight, Lite Thermal Underwear Long Johns and Socks (X-Large, 165 Charcoal Grey)

    8.7
    Very Good

  • 10

    Merino Protect 100% Merino Wool Base Layer Mens Thermal Underwear for Hunting Hiking
    Merino Protect

    Merino Protect 100% Merino Wool Base Layer Mens Thermal Underwear for Hunting Hiking

    8.5
    Good