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Under Armour 4.0 Base Layer Leggings
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$100.00
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SKU: WX2*0746042
Overview
Built for hunters and other outdoorsmen who need serious insulation in cold conditions, these base layer leggings are designed for lower activity levels or long sits where staying warm matters most. The brushed grid interior helps trap air close to the body, while moisture-wicking, fast-drying fabric works to manage sweat when conditions or exertion change. A fitted, streamlined cut with 4-way stretch and a performance elastic waistband supports movement without adding bulk, and odor-control technology is a practical advantage for extended wear.
Why Hunters Choose the Under Armour
Under Armour's
Warmest base layer for extremely
Moisture-wicking Fabric
Dries quickly to help manage
Odor-control Technology
Helps keep the layer fresher
Brushed Grid
Interior traps air next to
4-way Stretch
A fitted, streamlined fit
Key Features
- Under Armour's warmest base layer for extremely cold temperatures or lower activity levels.
- Moisture-wicking, fast-drying material helps manage sweat during cold-weather wear.
- Odor-control technology helps you stay fresher for longer.
- Brushed grid interior traps air next to the body for added warmth.
- 4-way stretch material is designed to move with you.
- Fitted, streamlined design with a performance elastic waistband.
Best Used For
- Extremely cold-weather hunts where maximum warmth matters more than high-output mobility
- Lower-activity sits in blinds, tree stands, or glassing positions in frigid conditions
- Hunters wanting a fitted base layer with moisture management and odor-control features
- Layering under outerwear when you need heat retention without bulky insulation
- Users who prefer a quarter-zip option for venting during changing exertion levels
Specifications
| Fast Drying | Yes |
|---|---|
| Fit | Fitted, streamlined fit |
| Interior | Brushed grid interior |
| Layer | Under Armour's warmest layer yet |
| Material | 93/7 polyester/elastane |
| Moisture Wicking | Yes |
| Odor Control | Yes |
| Stretch | 4-way stretch material |
| Temperature Rating | Built for extremely cold temperatures or lower activity levels |
| Ventilation | Quarter-zip neck allows you to vent heat as needed |
| Waistband | Performance elastic waistband |
Pros
- Under Armour's warmest base layer for extremely cold temperatures or lower activity levels.
- Moisture-wicking fabric dries quickly to help manage sweat during cold-weather wear.
- Odor-control technology helps keep the layer fresher for longer use.
- Brushed grid interior traps air next to the body for added warmth.
- 4-way stretch material supports movement with a fitted, streamlined fit.
- Performance elastic waistband and quarter-zip neck add practical comfort and venting options.
Considerations & Trade-offs
- Designed for extremely cold temperatures or lower activity levels, so it may be more insulation than you want for milder conditions or high-output hunts.
- The fitted, streamlined cut is built for layering, but it leaves less room if you prefer a looser base layer feel.
- The quarter-zip neck adds venting control, yet the overall focus remains on warmth rather than maximum breathability.
- As a warmest-layer piece, it’s best suited to a specific cold-weather role rather than year-round use.
Suggested Comparisons
- Heavyweight base layer bottoms
- Cold-weather hunting pants
- Midweight base layer bottoms
- Thermal leggings
Suggested Accessories
- Base layer top
- Insulating midlayer
- Hunting socks
- Moisture-wicking underwear
Frequently Asked Questions
What conditions is the Under Armour 4.0 Base Layer Leggings designed for?
It is described as Under Armour’s warmest layer yet, built for extremely cold temperatures or lower activity levels.
Does this base layer manage moisture during long sits or active movement?
Yes. The material is described as moisture-wicking and fast drying, which helps manage sweat during use.
Does it include odor control?
Yes. The product description says it uses odor-control technology to help keep it fresher, longer.
How does the material help with warmth?
The brushed grid interior is described as trapping air next to your body, which helps manage your microclimate and keep you warmer.
What is the fit like, and does it move well under outer layers?
It has a fitted, streamlined fit with 4-way stretch material, so it is designed to move with you. It also has a performance elastic waistband.