ALPHX Trunks – Athletic Fit for Muscular Thighs - ALPHX.com

ALPHX Athletic Fit Men’s Trunks – Built for Strength & Comfort

Trunks Designed for Muscular Thighs

ALPHX Athletic Fit Trunks are built for stronger legs and real muscle. Designed with extra legroom, stay-put support, and breathable comfort, these trunks deliver the fit and performance athletic bodies need—without compromise.

No Ride-Up. No Restriction. All-Day Comfort.

  • Extra room through thighs and seat eliminates squeezing or restriction
  • Stretch fabric flexes with your build for total mobility
  • Contoured pouch and low-rise waistband ensure secure comfort
  • Soft, breathable cotton–modal–elastane blend keeps you cool and dry
  • Flatlock seams prevent irritation and chafing during any activity

Strength Meets Flexibility

  • Wider leg openings for muscular thighs—no ride-up, no roll
  • Moves with your body from training to downtime
  • Designed for athletic builds who need performance and freedom
  • Stay-put support with sleek ALPHX styling

Stop settling for tight, restrictive underwear. ALPHX Athletic Fit Trunks are made for men with muscle—combining comfort, style, and power in one perfect pair.

Not sure which fit is right for you? Take our Fit Quiz to discover your perfect match.

Sort by
Filter and sort
Filter and sort

5 products

Size
Clear
Category
Clear
Target gender
Clear
Clear

5 products

FAQ's ALPHX Athletic Fit Trunks

What makes ALPHX Athletic Fit Trunks different?

Our Athletic Fit Trunks are designed specifically for men with larger or muscular thighs, offering 1.6 inches of extra legroom compared to our Modern Trunks. They provide a secure fit without restriction, ensuring all-day comfort and mobility.

Do ALPHX Athletic Fit Trunks ride up?

No! Our trunks are engineered with a stay-put design that prevents ride-up, even during intense activity. The fabric moves with you, delivering chafe-free, all-day comfort.

What sizes are available for ALPHX Athletic Fit Trunks?

Our Athletic Fit Trunks are available in sizes S-XL, maintaining the same contemporary fit as our Modern Trunks while offering more space in the thighs.