Under Armour HeatGear Armour Leggings - Lightweight (Style N339)

Our review of the Under Armour HeatGear Armour Leggings finds them best suited for athletes and active men who want a true second-skin base layer that moves and breathes. The single biggest reason to buy is the super-light HeatGear fabric that delivers coverage and a near-weightless feel while wicking sweat aggressively, making these leggings a reliable choice for high-intensity training, grappling sessions, or layered cold-weather runs.

Key Features

• Super-light HeatGear fabric: Provides coverage without bulk so wearers can layer comfortably and maintain a full range of motion.
• Strategic mesh panels: Add targeted ventilation in high-heat zones to help cool the body during long workouts.
• Sweat-wicking material: Dries quickly to reduce cling and discomfort after intense sessions or rapid temperature changes.
• Ergonomic seam placement: Keeps seams away from high-abrasion areas to increase durability during repeated movements and contact sports.
• Wide exposed elastic waistband: Offers a secure fit with wordmark detail and an updated gusset that improves support and comfort.
• Drop-in Strength PocketTM: Small right-side pocket provides convenient storage for a key or small item while training.

Who It's For

These leggings are ideal for men who need a compression base layer for running, gym workouts, or martial arts like jujitsu where a second-skin fit and breathability matter. The ultra-tight compression supports muscle alignment and reduces fabric movement, so athletes who value a locked-in feel will appreciate them.

Those who should look elsewhere include people who prefer a loose fit or need heavy insulation for extreme cold; the HeatGear fabric is lightweight and designed for temperature regulation rather than heavy warmth. Also consider a sturdier workwear option if you regularly expose leggings to abrasive environments that could cause tearing.

Pros & Cons

Pros

• Excellent fit and compression that stays in place during dynamic movement.
• Quick-drying, sweat-wicking fabric that works well across warm and cool conditions.
• Targeted mesh ventilation and ergonomic seams improve comfort during long sessions.
• Functional waistband and gusset design add support without restricting motion.

Cons

• Ultra-tight, second-skin compression may feel restrictive to some users.
• Durability reports vary; a minority of customers experienced early tearing under heavy use.

Specifications

Our Verdict

These leggings are a strong choice for active men who want a lightweight, breathable compression base layer that performs across a range of workouts. They offer smart ventilation, fast-drying fabric, and a supportive fit that represents good value for athletes, though those needing heavy insulation or absolute tearproof durability should consider alternatives.

Frequently Asked Questions

Are these good for cold weather?
The HeatGear fabric is lightweight and offers some warmth in mild cold; for very low temperatures layer or choose heavier baselayers.

Do they stay in place during grappling or jujitsu?
The ultra-tight compression, wide waistband, and updated gusset improve support and help keep the leggings secure during grappling.

How does sizing run?
Customers report a snug, second-skin fit; if you prefer more room consider sizing up for a less restrictive feel.