Men's Thermal Base Layer Tops
Men's thermal base layer tops are essential for anyone facing cold conditions. These garments help keep your body warm and dry. Each item in this collection offers advanced moisture-wicking fabrics. Soft material sits right next to your skin, reducing any chill.
Polarmax designs men's thermal tops to fit comfortably. Every piece in this selection supports your body during any winter activity. These base layer tops lock in heat but allow sweat to escape. This means you stay dry and comfortable longer.
Polarmax ensures each base layer top lasts season after season. The collection is built to withstand heavy use. Men's thermal tops from Polarmax are machine washable and retain their fit wash after wash. You can trust these products to perform.
Whether you need a midweight thermal top or something a bit heavier, we've got you covered. Our men's thermal tops all come in a variety of warmth levels, so you can rest easy knowing that your clothing will be able to keep you warm, no matter the temperatures you're working in.
| Collection | Fabric Content | GSM | Warmth | Weight | Stretch | Best For | Not Ideal For | Origin | Link |
|---|---|---|---|---|---|---|---|---|---|
| Double Layer | 100% Polyester | 150 | Medium | Midweight | Dual-layer / Mechanical Stretch | Sustained cold, moderate activity, layering under looser fitting outerwear | High-output activity, mild conditions, use under snug fitting bottoms | Imported | View Double Layer → |
| Military Fleece | 100% Polyester | 160 | Maximum | Midweight-Heavy | Mechanical Stretch | Extreme cold-weather base layers during low-to-medium activity | High-output activities in cool weather | Imported | View Military Fleece → |
| Merino Wool | 67% Polyester / 28% Merino / 5% Spandex | 175 | Medium | Midweight | Four-way / Flexible | Cold conditions, moisture management, odor control, multi-day wear | Heavy-duty work use or warm weather | Imported | View Merino Wool → |
| Single Layer | 100% Polyester | 175 | Light | Lightweight | Mechanical Stretch | High-output or dynamic activity requiring maximum breathability | Very cold or stationary conditions | Imported | View Single Layer → |
| Active Stretch | 84% Polyester / 16% Spandex | 180 | Medium | Midweight | Four-way / High-mobility | High-movement cold-weather activity, skiing, snowboarding, outdoor work | Low-output stationary use or extreme cold where warmth is top priority | Imported | View Active Stretch → |
| Mountain Fleece | 100% Polyester | 205 | Maximum | Heavyweight | Mechanical Stretch | Very cold conditions, low-to-moderate activity, all-day warmth | High-output or dynamic activity | Imported | View Mountain Fleece → |
| Microfleece | 92% Polyester / 8% Spandex | 230 | Medium-Heavy | Midweight-Heavy | Four-way / Flexible | Heavy-duty work use or cold weather | High-output activity | Imported | View Microfleece → |
| Wool Double Layer | 70% Polyester, 30% Wool Outer; 100% Polyester Inner | 230 | Medium-Heavy | Midweight-Heavy | Dual-layer / Mechanical Stretch | Very cold conditions, low-to-moderate activity, all-day warmth | High-output, warm weather or dynamic activity | Imported | View Wool Double Layer → |
