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High waist

High waist

฿1,090
฿1,090
Sale Sold out
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  • Ships within 1-2 business days
  • Made without PFAS
  • Modal fabric

The High-Waist

Higher coverage where you want it most. The High-Waist sits comfortably above the hip for a secure, no-slip fit, and absorbs up to 4 regular pads' worth of flow.

Built with a little extra structure for the days your body needs it most. The cotton modal blend hugs gently in all the right places, giving you real support through the bloat without ever feeling tight or restrictive.The absorbent zone extends further up the front than standard period underwear, and runs all the way up the back - so however you sleep or move, you're covered.

  • Absorbs 4 regular pads' equivalent 
  • Extended front & back coverage -  absorbent zone rises higher at the front and runs fully up the back, for protection at any sleep angle
  • Cotton modal blend - added structure and support, breathable against skin
  • 4-layer protection - wicking, absorbent, leak-proof, breathable
  • High-rise fit - smooths and supports through bloating, stays put, no rolling down
  • Reusable & machine washable

Wear it alone or as backup. Full peace of mind day or night.

Size guide

Measure your hips at the widest point and match to our size chart. If you're between sizes, we recommend sizing down for a more snug fit.

This product adheres to international sizing.

Shipping

Orders are processed within 1-2 business days. Standard delivery within Thailand typically takes 2 business days, while international orders can take 7-14 business days depending on the destination.

Returns & warranty

Finding the right fit is important. If your Oya underwear isn't quite the right size, we're happy to offer a size exchange, provided the hygiene seal remains intact, the product tags are still attached.

For hygiene reasons, we do not offer refunds. Size exchanges are only available for items with an intact hygiene seal and attached product tags.

If you receive a faulty item, please contact us within 14 days.

How does it work?

Oya uses a multi-layer protection system: a moisture-wicking top layer, an absorbent core that holds up to 30ml, a waterproof barrier for leak-free confidence, and a soft, breathable outer fabric.

Simply wear Oya like your regular underwear and let the built-in protection do the work.

How much can it hold?

Both our Brief and High Waist styles can absorb up to 30ml of liquid, equivalent to around 4 regular pads*

*based on an average absorbency of 7ml per pad

How long can I wear it?

Oya can be worn for up to 12 hours, depending on flow and activity level.

If you have a heavier flow, you may need to change more frequently.

See all FAQs →

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Why Oya?

  • For Women by Women

    Every Oya purchase helps build something bigger than a product - a community that celebrates women, challenges period stigma and believes comfort should never come with compromise.

  • Free from PFAS

    Made without added PFAS ("forever chemicals"), a group of chemicals that have been linked to hormone disruption and other health concerns. Just soft, comfortable materials designed for everyday wear.

  • Machine washable, made to last

    Rinse, wash cold and reuse. With proper care, Oya is designed to last for years.

  • Better for you. Better for the planet

    By switching to Oya, you're helping reduce single-use period waste. Crafted from soft, breathable TENCEL™ Modal fibres sourced from responsibly managed forests, Oya is designed with both your comfort and the planet in mind.