Breathe Trunk
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Breathe Trunk


Size Guide

Models wearing MeUndies products
Size S M L XL 2XL 3XL 4XL
Natural Waist (in) 26-28 29-31 32-34 35-37 38-41 42-44 45-47
Size S M L XL 2XL 3XL 4XL
Natural Waist (cm) 66-71 74.5-79.5 81-87 89-94 96.5-104 106.5-112 114-119.5


"This product Runs normal"

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Return Policy

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No Classic colors available in this size.
No Adventurous colors available in this size.

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Product Information +

Trunks Made for Training

Meet the shorter, younger sibling of our famous Breathe Boxer Brief w/ Fly. With the same breathable, perforated fabric made for everyday activity and the same bonded seams to keep ‘em in place, the family resemblance is strong. Our Breathe Trunk w/ Fly is just as moisture-wicking and quick drying as its relatives, but a little bit shorter so your thighs can do the talking. Run, walk, jog, or just sit on your couch in total breathable comfort. Bonding at the edges will loosen up after time to mold to your body for the perfect fit.

It's All in the Details

  • 3” inseam
  • Ultra-light
  • Breathable, perforated fabric
  • Anti-odor
  • Quick-dry
  • Super-stretchy
  • Stays put
  • Functional fly
  • Perfect for everyday activity
  • 69% Textured Nylon, 9% Recycled Nylon, 22% spandex
  • Ethically sourced
  • Natural and sustainable fibers
  • Imported under fair working conditions

Our Problem-Free Philosophy

Honestly, we’re just happy you’re here. We want you to be happy you’re here, too. If you’re not satisfied with any product for any reason, you can return your order for a full refund within 45 days.

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Free Shipping on US Orders $50+ and Free Returns
Members Always Get Free Shipping and Returns on US Orders

Orders are processed within 1-2 business days. Expected arrival times vary by location.