Skip to content

Smartwool Classic Thermal Merino Base Layer 1/4 Zip - Men's

Sale price $130.00

Size
Color

Low stock

Smartwool Classic Thermal Merino Base Layer 1/4 Zip - Men's

2027 Smartwool Baselayer Top

We've updated the fit of our Men's Merino 250 Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of our heaviest base layer tops and best base layers for cold weather, this garment uses 100% responsibly sourced Merino wool, shoulder panels, and a flatlock seam construction to help minimize chafing as well as help keep you comfortable and temperature regulated as you enjoy high-intensity skiing, hiking, running, and more.
    • Our slim fit is intended to follow the contours of the body
    • Fabric helps combine the moisture management, temperature regulation, and odor resistance of 100% Merino wool with interlock knit for comfort
    • Flatlock seam construction and offset shoulder and side seams designed to help increase comfort and minimize chafing
    • Side seams wrap to front
    • Size medium center-front zipper: 10" (25 cm)
    • Made in Vietnam: 100% Merino Wool. Exclusive of Decoration.
    • SW002821


    Size XS S M L XL XXL 3XL
    Chest 32″–34″
    81.5–86.5cm
    35″–37″
    89–94cm
    38″–40″
    96.5–101.5cm
    41″–43″
    104–109cm
    44″–46″
    112–117cm
    47″–49″
    119.5–124.5cm
    50″–52″
    127–132cm
    Waist 25″–27″
    63.5–68.5cm
    28″–30″
    71–76cm
    31″–33″
    78.5–84cm
    34″–36″
    86.5–91.5cm
    37″–39″
    94–99cm
    40″–42″
    101.5–106.5cm
    43″–45″
    109–114.5cm
    Hip 34″–36″
    86.5–91.5cm
    37″–39″
    94–99cm
    40″–42″
    101.5–106.5cm
    43″–45″
    109–114.5cm
    46″–48″
    117–122cm
    49″–51″
    124.5–129.5cm
    52″–54″
    132–137cm
    High Hip 31″–33″
    78.5–84cm
    34″–36″
    86.5–91.5cm
    37″–39″
    94–99cm
    40″–42″
    101.5–106.5cm
    43″–45″
    109–114.5cm
    46″–48″
    117–122cm
    49″–51″
    124.5–129.5cm
    Arm Length 30″–31″
    76–78.5cm
    31″–32″
    78.5–81.5cm
    32″–33″
    81.5–84cm
    33″–34″
    84–86.5cm
    34″–35″
    86.5–89cm
    35″–36″
    89–91.5cm
    36″–37″
    91.5–94cm
    Inseam 29″–30″
    73.5–76cm
    30″–31″
    76–78.5cm
    31″–32″
    78.5–81.5cm
    32″–33″
    81.5–84cm
    33″–34″
    84–86.5cm
    34″–35″
    86.5–89cm
    35″–36″
    89–91.5cm
    Neck 13″–13.5″
    33–34.5cm
    14″–14.5″
    35.5–37cm
    15″–15.5″
    38–39.5cm
    16″–16.5″
    40.5–42cm
    17″–17.5″
    43–44.5cm
    18″–18.5″
    45.5–47cm
    19″–19.5″
    48–49.5cm
    Weight 100–130 lbs
    45–59kg
    130–155 lbs
    59–70kg
    155–180 lbs
    70–82kg
    180–210 lbs
    82–95kg
    210–240 lbs
    95–109kg
    240–270 lbs
    109–122kg
    270–300 lbs
    122–136kg
    Height 5′3″–5′5″
    160–165cm
    5′5″–5′7″
    165–170cm
    5′7″–5′9″
    170–175cm
    5′9″–5′11″
    175–180cm
    5′11″–6′1″
    180–185cm
    6′1″–6′3″
    185–190cm
    6′3″–6′5″
    190–196cm
    Numeric Size 0–2 4–6 8–10 12–14 16–18 20–22 24–26
    Letter Size XS S M L XL 2XL 3XL
    Loading image:

    Peak Speed. Zero Hassel.

    All orders ship wicked fast and free from Portland, Maine—most within 24 hours, Monday through Friday. And if it’s not quite right, no worries—you’re covered by our 60-day hassle-free return policy.

    Got Questions about Smartwool Classic Thermal Merino Base Layer 1/4 Zip - Men's?

    We’re here to help. Email with a real expert—no bots, just outdoor enthusiasts who know the gear inside and out.

    Feel the Stoke

    From winter slopes to summer shores, see what our customers are loving.