tomboyx | Premium Underwear for All Day Comfort. Fit for You.

First Line Period 9" Boxer Briefs

First Line Period 9" Boxer Briefs - Main image
$26.98 $38 In stock

Category: first line period underwear

The longest inseam period boxer on the market. These full coverage wonders are here to put your overnight pads out of business.

  • High rise fit, 9" inseam
  • Absorbs up to 4-5 regular tampons
  • Room for a backup liner or winged pad on your heaviest days
  • 95% Cotton, 5% Spandex
  • Gusset: 89% Polyester, 11% Spandex
  • Inner Floating Gusset: 91% Polyester, 9% Spandex
  • PFA-free & OEKO-TEX® Certified
  • Machine wash & dryable just like our OG cotton undies
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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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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 (4.8 / 5 · 5 reviews)

Olivia R. ★★★★★

The 9-inch inseam is a game changer—finally, no more waking up to a shifted pad or pulling at my underwear all night. I tossed out my overnight pads entirely and haven't looked back since.

Emily R. ★★★★★

The 9-inch inseam is a game-changer—I slept without worrying about leaks for the first time in years, and the high-rise waist stayed put all night. Absorbs like a champ, too, easily handling my heaviest nights.

Emma ★★★★★

Finally, a pair of period underwear that actually covers my thighs at night, and the high-rise waist stays put even when I toss and turn. The 9-inch inseam means no more leaking onto the sheets, and I feel like it genuinely holds the amount of a regular tampon without any bulk.