Sierra Whiskey Co Undertac tactical underwear waistband close-up showing premium construction and Escape and Evasion pocket Sierra Whiskey Co Undertac tactical underwear waistband close-up showing premium construction and Escape and Evasion pocket

BUILT FOR REAL-WORLD OPERATIONS

Precision-Engineered Tactical Underwear. Field-Tested. Mission-Ready. Proven.
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OVER 1 MILLION VIEWS
Why This Underwear Went Viral
Tactical Belle tested the Escape & Evasion Pocket in the real world. See why Undertac is trusted when it matters most.
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TESTIMONIALS

Built for Real-World Use. Trusted by Operators.

Real feedback from the guys who don’t get to “try again tomorrow.”

“As an operator on a Special Forces ODA I have finally found a pair of underwear that I like. They keep you from chafing while rucking over mountain tops on infills, and dry quickly after a water op. The fly design that Sierra Whiskey came up with is really top notch. Super easy to do your business even when you're wearing full kit and a 100 pound ruck. The whole ODA rocks these Undertac's and none of us will go back to wearing what we did before.”

Dan Special Forces Operator
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“Hands down the best underwear on the market, whether you are a member of the Armed Forces, Law Enforcement community, or every day carry citizen. These underwear are amazingly comfortable and highly innovative. They allow for easy access to do your business while still maintaining your kit and equipment. Sierra Whiskey Company really set themselves apart from their competitors.”

Dave Special Forces Operator
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Special Forces Operator
FIELD-TESTED IN AFRICA

BY U.S. SPECIAL FORCES OPERATORS

Undertac Infantry was developed alongside a 12-man Special Forces Operational Detachment Alpha (SFOD-A) — elite Green Berets operating in one of the most unforgiving climates on earth.

From sunrise to sundown, through relentless heat and harsh terrain, Undertac endured real-world operational conditions where gear failure isn’t an inconvenience — it’s unacceptable.

If it meets their standards, it exceeds yours.

African savanna acacia tree at sunset representing Sierra Whiskey Co Undertac Infantry field testing

WHY SIERRA WHISKEY CO.

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Ships from Wisconsin, USA

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60-Day Hassle-free returns

Forged Where Failure Wasn’t an Option

Field-tested in the harshest environments on earth.
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