Under Armour Men's Performance Tech Long-Leg Boxer Brief - All-Day too

Our review of the Under Armour Men's Multi-Pack Performance Tech Long-Leg Boxer Brief finds them ideal for active men who want breathable, soft underwear that stays put during movement. The single biggest reason to buy is the fabric: the Performance Tech material is unusually soft, wicks sweat, and dries quickly, which makes these boxer briefs especially useful for running, gym sessions, and long workdays when moisture control and comfort matter most.

Key Features

• Lightweight construction: Feels minimal under shorts or pants and reduces bulk for better freedom of movement.
• Performance Tech fabric: Insanely soft and breathable material keeps skin cooler and more comfortable during sweat-heavy activities.
• 4-way stretch: Fabric moves in every direction so the brief follows active movement without riding up or constraining motion.
• No-roll hem & chafe-free seams: The hem stays flat and seams are placed to reduce irritation during long runs or repetitive motion.
• Tagless fit and waistband branding: A tagless design removes itch points while the performance waistband provides a secure, comfortable hold.

Who It's For

This is a good choice for athletes, daily commuters, and anyone who spends long hours on their feet and needs underwear that manages moisture and stays comfortable. The 9 in inseam gives extra coverage, so runners who prefer longer leg length or men who want undershorts that do not ride up will appreciate the fit.

Those who want a very loose, boxy fit or expect heavyweight thermal insulation should look elsewhere, since these are designed with a fitted, streamlined cut and lightweight material rather than bulky warmth.

Pros & Cons

Pros

• Comfortable, soft fabric that users frequently praise for feel and breathability.
• Performs well for active use thanks to moisture-wicking and fast-drying material.
• Secure fit with 4-way stretch and a no-roll hem that helps the briefs stay in place.

Cons

• Some customers report occasional durability issues at seams, so longevity may vary by use and care.

Specifications

Our Verdict

The Under Armour Performance Tech long-leg boxer brief is a solid pick for men who need breathable, soft underwear that handles sweat and movement well. With a fitted cut, 9 in inseam and reliable moisture management, it offers practical comfort and good value for active daily use, though a small number of users may experience seam wear over time.

Frequently Asked Questions

Are these suitable for running?
Yes, the 4-way stretch, no-roll hem, and moisture-wicking Performance Tech fabric make them well suited to running and other high-movement activities.

Do they stay in place during long workouts?
Most users report they stay in place thanks to the fitted design and performance waistband, though individual fit and activity type can affect performance.

How is the fabric for hot weather?
The material is lightweight and breathable and wicks sweat quickly, making these briefs comfortable in warm conditions.