The PROOF team doesn't take testing lightly. From Iceland to Tasmania, they've put their 72-hour gear through the wringer. All those redeyes, miles off-the-grid, and skipped laundry days led to the creation of the 72-Hour Merino Pant. They're crafted from a merino wool blend that took two years to perfect and naturally wicks moisture away from your skin, stays dry thanks to a durable, water-repellent finish, regulates your temperature, and resists odors for 72+ hours of wear. Just toss 'em in the washing machine when you get back home, and you're ready to head out there for days on end all over again.