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

First Line Period Bikini 3-Pack

First Line Period Bikini 3-Pack - Main image
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$58.5 $78 In stock

Category: multipacks

Leak protection made for real life. 

The period bikini is our highest-absorbency style for periods, pee, sweat, whatever. Feels like regular underwear so you can go about your day without that time of the month cramping your style.

  • Low rise
  • Absorbs up to 8 tsp (aka 6-7 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
  • Not eligible for Love at First Wear
Before you pay

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When it ships

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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 (4.8 / 5 · 5 reviews)

Natalie U. ★★★★★

The waistband stays put all day and the absorbent panel is so thin I forget I'm wearing it. I've been using them for my heaviest flow days and they honestly feel like my normal bikini underwear, not a pad in disguise.

Harper E. ★★★★★

Got these for my heavier days and honestly forgot I was wearing them until I checked the clock—the absorbency held up way past my usual panic-rush to the bathroom. They feel like normal cotton bikinis, not that crinkly diaper sensation I was bracing for. Already ordered another pack.

David S. ★★★★★

These have genuinely replaced my regular underwear on heavy days, the absorbency is no joke and they don’t feel like a diaper at all. I wore one through a full work day plus a sweaty commute and didn’t even think about it until I got home. Already ordered a second pack.

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