Underdays | Breathable and comfortable everyday TENCEL

The Brief Starter Kit

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$66.6 $90 In stock

This is for you. A first-timer’s exclusive to experience Underdays, thoughtfully designed with your health, comfort, and style in mind. The Starter Kit includes 3 briefs, and a pouch that’s perfect for storing your essentials—the perfect introduction to the underwear brand that is changing the game.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Harper ★★★★★

Bought this as my first try and the fit around the waistband is genuinely comfortable, no digging in after a full day at work. The three pairs plus the little pouch made it easy to test them out before committing to more.

Ellie ★★★★★

The pouch that came with this is way more useful than I expected, I've been tossing it in my gym bag for the spare pair. The briefs themselves sit flat under jeans with no bunching, which is the whole reason I switched. Three pairs was the right amount to figure out if I actually liked them before b

Elizabeth ★★★★★

The three-pack is a smart way to try these out without committing to a full set, and the pouch it comes with is surprisingly handy for travel. Fit is spot on and the fabric breathes way better than my old pairs.