Best Men's Activewear Undershorts (2026 Guide)
We selected items with high aggregated ratings and review volume, prioritizing performance fabrics, multiple inseam options, and consistent user feedback on fit and durability
This roundup covers top-rated men's activewear undershorts selected for performance features, fit, and verified customer ratings and review volume. Picks were chosen by comparing materials, inseam options, moisture-wicking properties, and aggregated user ratings across high-volume reviews
Top Picks
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1
Under Armour men's multi-pack standard tech 6" boxer brief
Soft, breathable boxer briefs with mesh fly panel, stretch fabric, and moisture-wicking performance. Customers note a comfortable fit with smooth fabric, though some report riding up and sizing variation
- moisture-wicking performance
- 4-way stretch for mobility
- wide waistband with metallic wordmark
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2
Under Armour men's tech long-leg boxer brief 9" inseam
Breathable, moisture-wicking long-leg trunks with four-way stretch and seamless design for comfort. Customers note soft feel, secure fit, and long length against chafe
- seamless comfort
- long 9" inseam
- moisture-wicking performance
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3
Men's Tech 6" Boxerjock multipack
Men's Under Armour boxer briefs with breathable mesh, four-way stretch, and moisture-wicking fabric. Noted for comfort and quality construction, with some users reporting mixed fit and durability variations
- breathable, soft fabric
- seamless comfort
- moisture-wicking
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4
Under Armour Performance Tech Long-Leg Boxer Brief 9" Inseam
Performance tech long-leg boxer briefs with breathable fabric and mesh fly panel. Comfortable, moisture-wicking, with 4-way stretch. One customer notes great length and stay-in-place fit
- moisture-wicking fabric
- 4-way stretch
- all-day comfort
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5
Under Armour men's multi-pack performance tech long-leg boxer brief
Breathable, soft boxer briefs with a 9" inseam and seamless sides for comfort. Customers note great length and staying power during runs
- seamless comfort
- 4-way stretch
- moisture-wicking quick-dry
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6
Under Armour men's multi-pack standard tech 6" boxer brief
Breathable, soft boxer briefs with a 6" inseam and no side seams for comfort. Fabric wicks sweat and dries fast, with a 4-way stretch for movement; customers note smooth fabric and comfortable waistband
- 4-way stretch construction
- moisture-wicking fabric
- seamless comfort waistband
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7
Under Armour men's multi-pack standard tech 6" boxer briefs
Soft, breathable boxer briefs with mesh panel, no seams, and 4-way stretch for comfort. Customers praise the smooth fabric and comfortable fit
- seamless comfort
- moisture-wicking fabric
- secure waistband
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8
Under Armour Men's Multi-Pack Tech Boxer Briefs (6" inseam)
Under Armour boxer briefs with soft, breathable fabric, mesh fly panel, and seamless sides for comfort. Customers note soft texture, good fit, and wide waistband
- soft and breathable
- seamless comfort
- moisture-wicking
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9
Under Armour men's multi-pack boxer briefs, 6" inseam
Lightweight performance boxers with soft, breathable fabric and tagless comfort. The wide waistband provides a smooth fit, with 4-way stretch for movement
- soft, breathable fabric
- tagless for comfort
- 4-way stretch for movement
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10
Under Armour performance tech long-leg boxer briefs, 9" inseam
Under Armour men's multi-pack performance long-leg boxer briefs with breathable fabric, mesh panel, and 4-way stretch for all-day comfort. Customers note soft feel, good length, and staying in place during runs
- 4-way stretch for movement
- seamless sides and back for comfort
- moisture-wicking and quick-drying