Teen Everyday Bikini

Regular price$19

Buy 3+ and save 20%

Leak-Resistant Teen Everyday Bikini Period Underwear

Regular price$19

Buy 3+ and save 20%

Goodbye pantyliners. Hello everyday protection.
HSA/FSA Approved

super-light AbsorbencyHolds up to 1 light tampon


HSA/FSA Approved

Free shipping on orders $50+

60 Day Money-Back Guarantee

Absorbent Core

Regular Protection

Machine Washable

Our Teen Leak-Resistant Everyday Bikini Period Underwear features a mid-rise fit with moderate coverage. This style provides a super light, never-know-it’s-there layer of protection from spotting, discharge, and sweat. Just thank our slim, built-in leak-resistant lining that wicks away moisture so you can stay cool, fresh, and totally unfazed by what’s going on down there.
  • Light spotting
  • Panty liner alternative
  • Back up a tampon
  • Discharge
  • Sweat

Outer: 75% Nylon 25% Spandex
Top Lining: 100% Cotton
Interlining: 95% Cotton 5% Spandex
Bottom Lining: 100% Polyester


Reusable & Machine Washable:
When you're done wearing, simply wash with cold water and gentle detergent, then hang or lay flat to dry.

Leakproof Zone: Regular
Center lining protection
Multi-layer leak-resistant absorbent core

  • Moisture-wicking top layer
  • Absorbent core
  • Waterproof liner
  • 4 way stretch fabric

Add More Styles To Make A Bundle

Leakproof Period

Teen Hipster


Tie dye
Leakproof Period

Teen Boyshort


Tie dye

Proof Teen look and feel exactly like your most comfortable undies but they have built-in Leak-Loc® technology to keep you feeling dry all day long. The Leak-Loc® edges prevent any leaks from ever happening. Plus, they’re machine-washable and rewearable, so way better for the environment.

Our underwear were made to keep you feeling and smelling great, despite the time of the month or level of your flow. If you’re ever thinking your Proof Teen need a refresh, add a few drops of vinegar or tea tree oil to them during your machine’s rinse cycle.

Yes to all of the above. Our super-heavy flow absorbent style holds up to 5 regular tampons worth of liquid, which means you’ll be safe and sound overnight or on those extra-heavy flow days. You can also use a moderate or light flow pair as an added layer of seamless protection and double up with a pad, tampon, or menstrual cup.

100%. It’s a huge part of their charm! Proof Teen underwear are machine washable and reusable. A win for the planet and your wallet, and they’re ready to go whenever your period strikes again next month.

Absolutely. Our Proof Teen line was designed for any and all activities. We’d recommend throwing an extra pair in your gym bag so you’ll be ready for that second half no matter what.

Rinse immediately after use and then either hand wash, or toss them in your washing machine using the gentle cycle. Use cold water and a mild detergent. Just be sure to skip the dryer: hang them up or lay flat to dry. Check out the care instructions for more detailed info.

It’s just like your regular bikini cut underwear, only there’s a super light, never-know-it’s-there layer of protection from spotting, discharge, and sweat. Unlike your favorite pair of undies, its slim, leak-resistant lining wicks away moisture so you can stay cool, fresh, and dry. Think of it like your regular bikini briefs but with a secret super power up!

Our Teen Everyday Bikini underwear are perfect for everyday wear. They’re super slim with super-light absorbency, making them great for keeping you dry from light flow days and in -between your period discharge.

Yes, you can absolutely wear the Teen Everyday Bikini overnight. They are super comfortable, breathable, and safe to wear for up to 12 hours at a time.

With the Teen Everyday Bikini you don’t need to wear a panty liner. The underwear is a replacement for the panty liner. The underwear can support a super-light flow and hold up to one tampon or panty-liner of liquid.

Yes! The Teen Everyday Bikini is ready to keep you dry no matter what the day brings. You can go full force whether it’s during the big game or a major workout sesh. They’re ready to absorb period leaks and keep sweat off your skin.

  • Super Comfy
  • Wear Again And Again
  • Sustainable Choice
  • Bundle + Save

See The Proof

Proof®’s patented Leak-Lock® technology protects you from leaks both big and small. Did you know our undies can hold up to 5 tampons worth of liquid?