Under Armour Men's Performance Tech Long-Leg Boxer Brief - All-Day 10%

In this review the Under Armour Men's Multi-Pack Performance Tech Long-Leg Boxer Brief is assessed for everyday wear and athletic use; the bottom line is that these boxer briefs are best for men who want a breathable, soft pair that stays in place during activity. The single biggest reason to buy is the fabric performance: a 90% polyester, 10% elastane knit that feels very soft, wicks sweat and dries quickly, so it works equally well for runs, gym sessions and long work days without feeling clammy.

Key Features

• Soft performance fabric: The 90% polyester and 10% elastane blend delivers a noticeably soft hand that keeps wear comfortable over hours of use.
• Moisture wicking: Material actively wicks sweat away from the skin and dries quickly, helping the wearer feel drier during workouts.
• Articulated mesh fly panel and gusset: Built-in mesh in the fly and gusset improves ventilation where it matters most for breathability.
• 4-way stretch construction: Stretch across four directions lets the briefs move with the body and reduces restriction during dynamic movement.
• No side or back seams: Seamless sides and back cut down on chafing and rubbing, improving comfort for long periods of wear.
• 9in inseam length: The longer leg length provides coverage and helps the brief stay in place during running or exercise.

Who It's For

These boxer briefs are aimed at men who need a versatile undergarment for both sport and everyday use, particularly runners or gym-goers who value moisture control and a longer leg that resists ride-up. The soft polyester-elastane blend and mesh gusset make them a good option for anyone who sweats during activity but still wants soft next-to-skin feel.

Men who prioritize heavy-duty longevity above all else or who require specialty fabrics for sensitive skin may want to consider alternatives; while many customers report lasting durability, a minority have experienced seam issues after extended use, so those seeking a lifetime pair should weigh that feedback.

Pros & Cons

Pros

• Comfortable, very soft fabric that feels good against the skin for extended wear.
• Effective moisture wicking and quick drying keep the wearer drier during workouts.
• Long 9in inseam and 4-way stretch help the briefs stay in place during running and movement.
• Seamless sides and back reduce chafing for all-day comfort.

Cons

• A small number of customers reported seams failing over time, so durability may vary between batches.
• Some shoppers disagree on overall value for money depending on longevity and personal expectations.

Specifications

Brand	Under Armour Apparel
Material	90% polyester, 10% elastane
Inseam	9in
Construction	4-way stretch with no side or back seams
Ventilation	Articulated mesh fly panel and gusset
Performance	Moisture wicking and quick-dry fabric

Our Verdict

These boxer briefs are a solid pick for men who want a comfortable, breathable daily and workout option that stays in place; the soft polyester-elastane fabric, mesh gusset and 4-way stretch justify the purchase for most active users. Those who demand extreme long-term durability should be aware a minority report seam issues, but for comfort and moisture control they represent good value for everyday athletic wear.

Frequently Asked Questions

Are these suitable for running?
Yes, the 9in length, 4-way stretch and moisture-wicking fabric make them well suited to running and other aerobic activities.

What is the fabric composition?
The briefs are 90% polyester and 10% elastane, which gives softness, stretch and quick-dry performance.

Do they chafe or ride up?
The lack of side and back seams reduces chafing, and the longer inseam helps them stay in place for most users.