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Proof

Interval Boxer Briefs

$11.98

$22.00

Color: Navy

Size: 

Quantity: 

1
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This is a final sale item

Performance boxer briefs cut from technical fabric and built for an active lifestyle

Let us lay some facts on you about Proof’s Performance Boxer Brief. It’s designed to be worn all day—and even longer when you need to—with fabric that stretches even at your slightest movement and an anti-microbial finish that keeps it fresh and odor free. Exceptional flexibility, with both horizontal and vertical stretch, moves with you in every direction no matter what you’re doing, whether it’s the gym or your daily commute. The incredible fabric, developed in conjunction with Japan’s Toray Industries, is not only soft and comfortable, but built to retain its shape with industry-leading shape recovery.


  • Cut from a technical fabric developed specifically to create high-performing underwear you can rely on for an active lifestyle
  • Low-power stretch feels like it isn’t stretching at all, but simply moving along with your body like a close-fitting base layer should
  • Four-way stretch moves with you in every direction
  • High stretch recovery means the fabric will never get baggy and loose, no matter how much you wear and wash
  • Anti-microbial finish that fights odors and keeps things fresh, also prevents bacteria from degrading the fabric for a longer life
  • Plush elastic waistband for comfort