Best Men's Activewear Undershorts for Gym Workouts (2026)
We selected products by evaluating inseam options, performance fabrics, construction details, and per-pair value across comparable multi-pack and long-leg styles
The Verdict
- Best Overall: Under Armour men's multi-pack standard tech 6" boxer brief — Best everyday fit: dependable 6" boxer-brief cut with performance fabric for versatile gym use
- Best Value: Under Armour men's tech long-leg boxer brief 9" inseam — Best long-leg option: 9" inseam gives extra coverage and chafe protection for runs and lunges
Top Picks
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1
Best Overall Under Armour men's multi-pack standard tech 6" boxer brief
Best everyday fit: dependable 6" boxer-brief cut with performance fabric for versatile gym use
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
Best Value Under Armour men's tech long-leg boxer brief 9" inseam
Best long-leg option: 9" inseam gives extra coverage and chafe protection for runs and lunges
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
Best budget multipack: simple 6" boxerjock construction offering lightweight, athletic comfort
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 men's multi-pack performance tech long-leg boxer brief
Best performance long-leg multipack: long 9" cut and tech fabric designed to manage sweat during workouts
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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5
Under Armour men's multi-pack standard tech 6" boxer brief
Best balanced pack: standard 6" boxer-brief profile with moisture-managing fabric for daily training
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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6
Under Armour men's multi-pack standard tech 6" boxer briefs
Best activewear staple: classic 6" boxer-brief fit made from quick-dry performance material
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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7
Under Armour Men's Multi-Pack Tech Boxer Briefs (6" inseam)
Best durable multipack: 6" boxer brief construction with tech fabric engineered for frequent wear
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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8
Under Armour men's multi-pack boxer briefs, 6" inseam
Best athletic brief alternative: 6" inseam boxer-brief cut focused on secure support and stretch
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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9
Under Armour performance tech long-leg boxer briefs, 9" inseam
Best extended coverage: performance 9" boxer briefs that prioritize chafe reduction and stable fit
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