Under Armour Men's Performance Tech Trunk Boxer Brief - Ultra-Soft Fit

Our review of the Under Armour Men's Multi-Pack Performance Tech Trunk finds these trunks best suited for men who want a lightweight, breathable everyday and gym undershort with a snug but not restrictive fit. The single biggest reason to buy is the insanely soft Performance Tech fabric that wicks sweat, dries fast and stays comfortable across long days and workouts. They feel like underwear you can forget you are wearing while still providing reliable support without bulk.

Key Features

• Lightweight fabric: Keeps the trunk comfortable for all-day wear and prevents overheating during workouts or long shifts.
• 4-way stretch construction: Allows full range of motion during exercise or daily activity without binding.
• No-roll hem: Helps the 3' inseam stay in place so the legs do not ride up during movement.
• Chafe-free seams: Panels are arranged to minimize irritation for long wear and repeated movement.
• Performance waistband: Branded waistband lies flat and offers stable support without digging in.
• Articulated mesh fly panel: Adds ventilation and easier access while maintaining a streamlined look under clothing.

Who It's For

The trunks are ideal for active men who need a breathable, quick-drying undershort for gym sessions, running errands or wearing under work trousers. The fitted cut and 4-way stretch make them especially useful for people who prefer supportive, low-profile underwear that works under shorts and pants.

Those who want maximum longevity from every pair or prefer very thick, heavy fabrics may want to consider heavier-duty options; a few customers reported mixed durability experiences, including isolated fabric tears after washing, so buyers who need extreme abrasion resistance should look elsewhere.

Pros & Cons

Pros

• Very comfortable and soft material that breathes well during workouts.
• Fitted yet flexible thanks to 4-way stretch, providing good support without restricting movement.
• No-roll hem and chafe-free seams increase comfort for extended wear.
• Performance waistband stays in place and looks neat under clothing.

Cons

• Durability is mixed for some users, with occasional reports of fabric issues after washing.
• Not the best choice for those who prefer thicker, more protective undershorts.

Specifications

Our Verdict

These trunks are a solid choice for men seeking a lightweight, breathable and comfortable everyday performance underwear that holds up during workouts and long days. They offer excellent comfort and support for the price, though shoppers who demand the utmost durability or thicker material should weigh that preference before buying.

Frequently Asked Questions

Are these trunks good for workouts?
Yes, the breathable Performance Tech fabric and 4-way stretch make them well suited for gym use and active sessions.

Do they ride up during exercise?
The no-roll hem and fitted cut reduce riding up for most users, though fit can vary by body type.

How do they handle moisture?
The material wicks sweat and dries quickly, keeping you comfortable during high-intensity activity.