Multi-Pack Performance Tech Long-Leg Boxer Brief for Men - 9ft Inseam

Our review of the Under Armour Multi-Pack Performance Tech Long-Leg Boxer Brief for men focuses on who will benefit most from these underwear: active guys who want a fitted underlayer that stays in place during runs and workouts. The single biggest reason to buy is the fabric - the Performance Tech material is described as insanely soft, breathable and fast-drying, which makes these briefs ideal for long training sessions or all-day wear. The 9' inseam provides extra thigh coverage while the tagless design and chafe-free seams prioritize comfort.

Key Features

• Performance Tech fabric: Lightweight and breathable material offers a soft next-to-skin feel and wicks sweat to dry quickly during exercise.
• 4-way stretch construction: Fabric moves with the body in every direction for unrestricted movement while running or lifting.
• No-roll hem: The hem resists riding up so the 9' inseam stays put through repeated motion and long days.
• Tagless and chafe-free seams: Internal construction reduces irritation, making them comfortable for extended wear or high-rep workouts.
• Performance waistband: Branded elastic supports a fitted silhouette without digging in and helps garments maintain their shape.

Who It's For

These boxer briefs are best for men who train regularly, run, cycle, or spend long days on their feet and want underwear that combines breathability with coverage. The 9' inseam and 4-way stretch suit athletic builds and anyone who dislikes garments that ride up or bunch.

Those looking for a very loose boxy fit should look elsewhere, as the cut is described as fitted and streamlined rather than baggy. If absolute maximum durability over years of heavy use is the primary concern, some buyers reported mixed longevity, so shoppers prioritizing guaranteed long-term wear might consider reinforced-stitched alternatives.

Pros & Cons

Pros

• Soft, breathable fabric that wicks sweat and dries fast for comfortable workouts.
• Fitted design and 4-way stretch provide secure movement without restriction.
• No-roll hem and chafe-free seams keep the 9' inseam in place and minimize irritation.
• Performance waistband with wordmark branding holds the brief snugly without excessive compression.

Cons

• Durability reports are mixed; a small number of users have experienced seam splitting over time.
• Some buyers perceive the price as higher than basic undies, which may affect value for budget shoppers.

Specifications

Brand	Under Armour
Fit	Fitted, streamlined
Inseam	9' in
Material highlights	Lightweight Performance Tech fabric, breathable
Construction	4-way stretch with no side or back seams
Features	Tagless, no-roll hem, chafe-free seams, performance waistband

Our Verdict

These long-leg boxer briefs are a strong choice for active men who want soft, breathable underwear that stays in place during workouts and all-day wear. The Performance Tech fabric and thoughtful construction justify the purchase for anyone valuing comfort and fit, though those who need the highest possible longevity or the lowest price may want to compare other options.

Frequently Asked Questions

Are these briefs suitable for running?
Yes, the 4-way stretch and no-roll hem make them well suited for running and other dynamic activities.

Do they dry quickly after heavy sweating?
The Performance Tech fabric wicks moisture and dries faster than standard cotton, so they perform well during sweaty workouts.

Is the fit loose or tight?
The fit is described as fitted and streamlined, not too tight or too loose, providing support without constriction.