Midweight Base Layers for Optimal Warmth & Comfort
Stay comfortable in the cold with our midweight base layers. These pieces are designed for those who need reliable warmth and comfort. Each item in this collection keeps you cozy without bulk, so movement stays easy.
Midweight base layers work under your outerwear. The fabric wicks away sweat and keeps the chill off your skin. Our choices give extra protection for chilly days outdoors. Marathon runners, hikers, and skiers all benefit from proper midweight base layers.
This collection covers tops and bottoms. Each is made with attention to fit and function. You get warmth, breathability, and a smooth feel against the skin. Performance counts, so our midweight base layers meet high standards.
Explore shirts, leggings, and long-sleeves options. Everything in this group helps regulate body heat. Midweight base layers serve as your first defense when the temperature drops.
Our styles include classic cuts and technical designs. Layer under jackets or pair with active gear. Midweight base layers from Polarmax offer lasting comfort for any winter activity.
| 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 → |
