Brand
Smartwool
- Best overall Smartwool Classic All-Season Merino Base Layer 1/4 Zip in Cold-weather running guide
- Warmest Smartwool Classic Thermal Merino Base Layer 1/4 Zip in Cold-weather running guide
- Best for cold runs Smartwool Run Cold Weather Crew Socks (Targeted Cushion) in Cold-weather running guide
Running base layers & tops 2
Smartwool Classic All-Season Merino Base Layer 1/4 Zip
Smartwool · lightweight merino quarter-zip
Best overall
- Fits
- Men's, Women's
- Warmth
- Light
- Wind
- None
- Water
- None
- Visibility
- None
Temp range35 to 55°F*$105Mid-range
- Fits
- Men's
- Warmth
- Midweight
- Wind
- None
- Water
- None
- Visibility
- None
Temp range20 to 40°F*$130Mid-range
Running socks 2
Smartwool Run Ankle Socks (Targeted Cushion)
Smartwool · merino light-cushion ankle sock
- Fits
- Unisex
- Warmth
- Light
- Wind
- None
- Water
- None
- Visibility
- None
Temp range—$21Mid-range
Smartwool Run Cold Weather Crew Socks (Targeted Cushion)
Smartwool · cold-weather cushioned crew sock
Best for cold runs
- Fits
- Unisex, Women's
- Warmth
- Midweight
- Wind
- None
- Water
- None
- Visibility
- None
Temp range—$24Mid-range