Period-Proof Activewear

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Leakproof leotards and tights designed to keep you moving (even on your period).

  • Black
  • Pink
Leakproof Leotard
Medium Absorbency
$60 CAD
  • Nude 1
  • Nude 2
  • Nude 3
  • Nude 4
  • Nude 5
  • Ballet Pink
  • Black
  • +3
Leakproof Tights
Medium Absorbency
$20 CAD Buy 3+ Save 20%
nothing is tmi here—we promise.
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Our Period-Proof Activewear features the same patented leakproof technology as all our leakproof underwear, absorbing up to 3 tampons or pads worth of blood. Plus, each item features moisture-wicking, antimicrobial, odor-crushing technology to tackle any funky smells. All our products are free from PFAS and other chemical treatments.

Each item in our Period-Proof Activewear collection has a super-discreet absorbent pad in the gusset liner that absorbs up to 3 tsp of blood, which equals about 3 tampons or pads.

Every period is different but we recommend wearing your Leakproof Leotard and Leakproof Tights as backup protection with a tampon or menstrual cup during your cycle’s medium to heavy days. If you're having a light flow day, you can confidently wear them on their own.

Quickly rinse the gusset before you throw your tights or leotard in the machine. Wash on cold with mild detergent, then lay flat to dry. That's it!

Check out our size chart here. If you want some help, we have virtual fitters ready on deck to help you find your perfect fit. Book a video call with them today.

Yes. As long as the sanitary strip and tag are still attached. Please note that all sale items are final sale and cannot be returned or exchanged.

Absolutely. The Leakproof Leotards and Tights have a barely-there leakproof liner so they look and feel just like regular activewear.

Our collection is made to fit teen bodies. For period-proof activewear in adult sizing, please visit Knix.