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

First Line Period 4.5" Trunks

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$23.46 $34 In stock

Category: first line period underwear

Your signature briefs with absorbency for periods, pee, sweat, whatever. So you can, you know, feel like yourself. 

  • Mid rise fit, 4.5" 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 (4.6 / 5 · 5 reviews)

Claire ★★★★★

I was skeptical about the absorbency claim, but it handled a full day of travel without a single leak. The mid rise sits comfortably without digging in, and having room for a backup pad is a thoughtful touch I actually used.

Sophia Z. ★★★★★

The 4.5" inseam hits that perfect spot for me—long enough to stay put during the night, short enough to feel like regular trunks. I've worn them through a full workday with heavy flow and a backup pad, and not a single leak even after a long commute. They're my new go-to for everything, honestly.

Ellie ★★★★★

The 4.5-inch inseam is perfect for everyday wear without feeling like I'm in full-on shorts, and the mid-rise fit stays put. I wore them through a whole workday and the absorbency honestly handled way more than I expected, even with a backup just in case. Feels weird to say, but they're genuinely co

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