Smartwool Classic Thermal Merino Base Layer 1/4 Zip - Men's
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Smartwool Classic Thermal Merino Base Layer 1/4 Zip - Men's
2026 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.
- Slim Fit
- 100% Merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance
- Fit updated to improve functionality while enhancing aesthetics
- Shoulder panels eliminate top shoulder seams
- Flatlock seam construction designed to minimize chafing
- 10' (25 cm) center front zipper semi-locking slider
- Knit in Vietnam: 100% Merino Wool. Exclusive Of Decoration
- Garment Weight: 298 g = 10.51 oz
- Style: SW016355
| 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 |
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