These bestselling 72-Hour Boxer Briefs are crafted from Australian merino wool that’s infused with nylon to ensure it never shrinks in the washing machine. The ultimate boxer briefs in our arsenal, these are perfect for adventures that call for packing light and staying comfortable. Thanks to the natural performance properties of this soft merino wool, they’ll stay comfortable and odor-resistant whether you’re headed out for a day hike, exploring a new city, or hopping on a redeye to another continent.