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The men at Jack Health agreed: sweaty, uncomfortable days have to go. So, we created Jack’s Briefs with modal—a 100% plant-based fabric from the beech tree—to keep you cool and dry where it matters most.
Comfort fit waistband
Moisture-wicking & odor-fighting
Enhanced pouch support
No-roll waistband
Temperature regulating fabric
Material + Care
FAQ
I didn’t think underwear could make this much of a difference. They’re cool, comfy, and I’ve already bought more pairs.
Chris L
These are the best for athletic days! They keep me dry, cool, and I don’t have to worry about discomfort. Plus, the health benefits are a huge bonus.
Matt S
I’ve tried all kinds of underwear, but nothing compares to these. Comfortable, breathable, and they really do make a difference in staying cool.
Kevin D
