BN3TH Pro Flex Max Boxer Brief 

Built for all-purpose training and everyday sport, the BN3TH Pro Flex Max Boxer Brief combines breathable performance mesh, supportive 4-way stretch, and The Original 3D Pouch for secure comfort through workouts and active days.

Why You'll Love It

• The Original 3D Pouch: Provides separation and support to help keep everything comfortably in place while you move.
• Breathable Performance Mesh: Lightweight polyester-blend mesh promotes airflow while helping manage heat and moisture during activity.
• Moisture-Wicking Performance: Helps move sweat away from the body for a fresher, more comfortable feel through workouts and everyday wear.
• Ionic+® Anti-Odor Technology: Built-in odor-control technology is designed to remain effective through repeated washing.
• 4-Way Stretch & Support: Performance stretch fabric moves with your body for running, lifting, climbing, sports, and training.
• Wide No-Roll Waistband: A premium wide waistband delivers a secure fit designed to stay comfortably in place.
• Chafe-Free Flatlock Stitching: Smooth flatlock construction helps minimize irritation during active use.
• Limited-Edition Collaboration: Created in collaboration with KUPS, a Whistler, British Columbia-based artist supported by BN3TH.

Perfect For

All-purpose training, gym sessions, running, lifting, climbing, team sports, active everyday wear, and anyone looking for supportive performance underwear with a longer inseam and secure fit.

Technical Details

• Product Type: Performance Boxer Brief
• Brand: BN3TH
• Collection: Pro Flex Max
• Fit: Secure Performance Fit
• Inseam: 7"
• Fabric: 89% Recycled Polyester, 11% Spandex
• Construction: Breathable Polyester-Blend Mesh
• Pouch: The Original 3D Pouch
• Stretch: 4-Way Stretch
• Odor Control: Ionic+® Anti-Odor Technology
• Waistband: Wide Premium No-Roll Waistband
• Seams: Chafe-Free Flatlock Stitching
• Sizes: XS–XXL

What Sets It Apart

The Pro Flex Max is engineered around movement and support. Its longer 7-inch inseam and wide waistband create a secure feel, while breathable moisture-wicking mesh, 4-way stretch, flatlock stitching, and BN3TH's Original 3D Pouch work together to keep you comfortable through demanding workouts and active days.

Bottom Line: The BN3TH Pro Flex Max Boxer Brief combines a supportive 3D pouch, breathable recycled performance mesh, lasting Ionic+® odor control, and a secure 7-inch fit for versatile training and everyday sport.

Pull them on, get moving, and stay supported from warm-up through the rest of your day.