Under Armour Boys 3-Pack Performance Boxer Brief

|20 ratings
Item # 990497237
Current price is $13.48
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Highlights

  • Boys 3-pack performance boxer briefs with 4-inch inseam featuring a mix of bold prints and versatile solid colors
  • Smooth and breathable stretch jersey fabric feels lightweight while helping wick away moisture for all day comfort
  • Supportive athletic fit with flexible waistband and stay-put legs for secure coverage that moves with him
  • Logo waistband helps keep underwear secure during activity
  • 4-way stretch construction 
  • Machine washable fabric is designed to hold its shape color and performance wear after wear
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Under Armour Boys 3-Pack  Performance Boxer Brief
Under Armour Boys 3-Pack  Performance Boxer Brief
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About this item

Product details

Performance-Driven Design for Active Boys

Under Armour transforms everyday essentials with its boys’ sport boxerjock 3-pack, combining bold novelty prints and versatile solids for a fun, energetic, and athletic look. Featuring splatter-inspired graphics, playful patterns, and vibrant color pops, these boxerjocks are designed to excite and inspire active lifestyles.

Lightweight Fabric for Comfort and Movement

Crafted from a lightweight polyester and elastane jersey knit, the fabric is soft, breathable, and stretches naturally with the body. It wicks away moisture and dries quickly, ensuring cool and comfortable wear during school days, sports practice, and weekend adventures. Unlike basic cotton underwear, this performance blend maintains its shape and support, wash after wash.

Thoughtful Construction for Everyday Durability

Designed with comfort and durability in mind, these boxerjocks feature a soft elastic waistband with Under Armour branding that stays securely in place. Smooth flatlock seams reduce irritation, while reinforced stitching adds strength in high-motion areas. The streamlined silhouette offers comfortable coverage and stays put under shorts, joggers, or uniforms.

Elevating Basics with Trusted Quality

Rooted in Under Armour’s legacy of innovation, this 3-pack delivers technical fabric, durable construction, and standout design. It’s a dependable foundation layer that supports active lifestyles, enhances comfort, and provides the trusted quality families expect from a leading athletic brand.

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Specifications

    Under Armour Boys 3-Pack Performance Boxer Brief
    Key Specifications
    Number Of Pieces: 3 pack
    Fit: Stretch fit
    Waist Height: Brief
    Waistband: Elastic waistband
    Coverage: Brief
    Fly/Gusset: N/A
    Inseam: 4" inseam
    Garment Length: VARIES BY SIZE
    Garment Weight: N/A
    Size Options: S-XL
    Model Sizing Information: N/A
    Material: Polyester/Elastane Jersey Knit
    Care Instructions: Machine wash cold with like colors

Member ratings & reviews

4.7 out of 5 stars
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20 ratings14 reviews
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Showing 1-3 of 14 reviews

Apr 3, 2026
Reviewer name: Jojo98
5 out of 5 stars
5 out of 5 stars review

Comfortable and stylish

The Under Armour boys sport boxer jock Underwear is perfect For boys who prefer the slick sporty feel rather than the cotton. The material is 90% polyester and 10% elastane. Doesn’t stay wet very long. When I wash it, it dries very quickly in the dryer. It’s perfect for A quick wash load. The waistband is comfortable. It does have a seam, but it is smoothly sewn. It has a fun pattern on wanting the pairs and solid colors for the other two.

Incentivized Review
Helpful?5OCM43WN5I1319214109243
Apr 3, 2026
Reviewer name: FourSons
5 out of 5 stars
5 out of 5 stars review

Comfortable and Breathable

My son loved these boxer briefs cuz they are incredibly comfortable and the fabric is soft, breathable, and moisture-wickingy, which keeps him dry during his track practice and all-day wear too. He also mentioned that they are a bit snug but not too tight which is something he greatly loves since they make him agile. I would highly recommend these Under Armour Sport Boys Boxer Jock Briefs for any parent looking for reliable and comfortable underwear for their boys!

Incentivized Review
Helpful?5OCM43WN5I1319214109243
Apr 8, 2026
Reviewer name: Mrspay
5 out of 5 stars
5 out of 5 stars review

Great for active boys

Under Armour Boys’ Boxer Briefs are a solid choice if you’re looking for comfort, durability, and performance for active kids. The first thing that stands out is the fabric, it’s lightweight, soft, and does a great job of wicking away moisture. This makes them especially good for sports. The fit is snug without being too tight, offering good support while still allowing for easy movement. My son said “these new underwear feel great, mom”. In terms of durability, these hold up nicely. The stitching stayed intact after washing, and the material didn't lose its shape or softness. The also run true to size of similar brands.

Incentivized Review
Helpful?5OCM43WN5I1319214109243