Mountain Fleece Thermals - Our Warmest Layers
Mechanical Stretch
Acclimate Dry+
Odor Control
Designed for dependable warmth and all-day comfort, the Polarmax Mountain Fleece Collection delivers soft, breathable insulation for cold-weather conditions. This versatile fleece traps heat while allowing excess moisture to escape, helping you stay comfortable whether you’re active outdoors or relaxing afterward. Easy to layer and comfortable enough to wear on its own, Polarmax Fleece offers a reliable balance of warmth, breathability, and everyday wearability—making it a go-to choice for work, travel, and cold-weather living.
Key Features:
| 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 → |
