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How they work

How I am Eva period panties work so well

I am Eva period panties look and feel just like your normal underwear, but hold and absorb up to two regular tampons’ worth of blood.

Our rigorously tested NZ designed period underwear features:

  • innovative super slim fabric - no bulky layers here! 
  • a super-absorbent layer to hold and absorb 2 tampon's worth of flow
  • an anti-microbial layer that uses the latest fabric technology to prevent odours
  • a soft layer closest to your skin to draw moisture away fast, ensuring you remain dry and feel fresh
  • an outer layer to provide a leak-resistant barrier
  • flattering cuts that fit comfortably but firmly to help prevent spills, and feel stylish and sleek

Depending on your flow, you choose to wear I am Eva period underwear as an alternative to pads, tampons or cups, or in conjunction with other menstrual products. Whatever works for you is great with us!

Still have questions? Check out our I am Eva period-proof underwear FAQs below.

Why you'll love I am Eva period-proof underwear

Comfortable and sleek 

Our period panties are soft and look just like your normal knickers. But better.

Take the worry out of your day 

I am Eva period underwear's absorbent, anti-microbial and leak-resistant layers keep you feeling fresh and dry, and take leaks out of the equation. They’re safe and easy to use, with no risk of toxic shock syndrome.  

Easy to wash 

Simply rinse in cold water, then wash on a cold cycle with your normal clothes. Line dry. Don't use fabric softener as it prevents the moisture-wicking and anti-microbial technologies from working.  

Environmentally sustainable 

By choosing I am Eva period underwear, you’re helping to reduce the massive number of single-use menstrual products that end up in landfills (over 350 million in New Zealand every year!). 

Feel good 

You're helping to end period poverty in New Zealand. We donate 5% of all our reusable period underwear to charities.

Plus I am Eva is designed in New Zealand and ethically manufactured. What’s not to love?

Go ahead!

Shop I am Eva Now!


How to care for your I am Eva Period Underwear

We recommend rinsing by hand first, then pop in a cold wash with your other clothes and line dry. DO NOT use fabric softener as it prevents the moisture-wicking and anti-microbial technologies in your I am Eva undies from working as effectively.  



Size guide - Find your perfect I am Eva undies 

Your hip measurement is the most important one when trying to find the right size underwear. For some of our styles it's also helpful to know your waist measurement.

I am Eva underwear is made true to size so your best bet is to use our size chart below and consider the size of underwear you currently wear. To ensure the leak proof technology does its job our underwear fits slightly more snug than your regular underwear. 

I am Eva FAQs

Everything you ever wanted to know about I am Eva period-proof underwear

How much liquid do they hold?

I am Eva underwear has been rigorously tested and can hold up to two regular tampons or pads worth of menstrual blood.

Can they replace all other menstrual products?

This depends on you and your flow — you know your body best. I am Eva underwear can be used instead of other menstrual products, or for those with a heavy flow you may choose to wear them as a backup to your tampon or cup. We suggest you test your own limits.

 So no odour? No dampness?

We have used the latest innovations in fabrics to prevent odour and dampness. The anti-microbial layer fights bacteria and odours, and the moisture wicking cotton quickly draws moisture away from your skin, keeping you dry.

What are they made of? Will they irritate my sensitive skin?

The layer closest to your skin is 95% organic cotton, 5% spandex. The other fabrics used are nylon and spandex. They shouldn’t irritate even sensitive skin.

Are they comfortable though?

They look and feel just like your normal underwear. We’re not kidding! In fact some would say they’re even more comfortable than your normal underwear.

Are they ethically made?

I am Eva underwear is manufactured by a company who provides ethical work conditions and takes environmental sustainability seriously. We spent a lot of time researching how and where our underwear is made. I am Eva underwear is made in Sri Lanka by a family-owned manufacturer. They pay a fair wage and provide free medical care for all employees. They have processes and practices in place to reduce their waste output, and source sustainable fabrics.

Are they eco-friendly?

Hell yes! By replacing single use pads and tampons, I am Eva underwear helps prevent millions of pads and tampons ending up in our waterways and landfill every year. 

We want to lead by example when it comes to environmental sustainability. We aim to operate a business with carbon-neutral status by mid-2019.

Can my teenager wear them?

Absolutely! Our underwear can be worn by all wahine. We have made them available in a full range of sizes.  

Can I use I am Eva period-proof underwear for things other than my period?

Of course! I am Eva underwear is also suitable for spotting and minor bladder weakness (pregnant and older women rejoice). You might even love them so much that you decide to wear them every day. You do you.

How can I smash the patriarchy?

We’re working on it. But here’s a start:

  • buy your underwear from a female-run business
  • manage your period in comfort
  • get out there and change the world.


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