Flowcup & Sterilising Cup

Flowcup & Sterilising Cup


Focused toward sustainability, safety, and comfort the Flow menstrual cup has been designed by a registered naturopath, and safety tested in New Zealand.


  • May be worn for 6-10 hours

  • Flat, flexible stem designed for comfort and easy cleaning

  • Free of colours, chemical dyes, and BPA

  • Smooth, slender design with no hard ridges

  • Inside measurements in mls make it easy to track changes in your flow

  • Longer 'training' stem for first time users. This can be trimmed at any time to a length that suits you.

For every Flowcup bought, we will gift another to a woman or girl who needs one, alongside a free workshop on all things period-related, as part of our One Thousand Women project.

Flowcup size:
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  • Step-by-step instruction leaflet

  • Cotton storage bag

  • Reusable and recyclable packaging

  • Flow sterilising cup

Available in small and medium.

The collapsible sterilising cup is perfect for use as a dedicated cleaning and sterilising vessel for your Flowcup. Compact when folded down.

  • Available in dusky pink.

  • Capacity 125 ml

  • Microwave and dishwasher friendly


The Flowcup is made from 100% clear medical grade silicone.


  • Small

Best suited for those with lighter periods, under 30s, and if you have a low cervix or a sensitive bladder.

Stem: 2.5cm. Length: 7.5cm. (including stem). Opening: 3.8cm. Capacity: approx 30 ml

  • Medium

Best suited for those with heavier periods, over 30s, if you've had a vaginal birth or have a weaker pelvic floor.

Stem: 2.5cm. Length: 8cm. (including stem) Opening: 4.2cm. Capacity: approx 45ml


The Flowcup may be worn for 6-10 hours at a time, or changed 2-4 times per day depending on how heavy your flow is. Using the Flowcup during your period will help you to understand your body's individual rhythm during this time and you will soon know how many times you will need to change it during the day/night.

A step-by-step instruction leaflet is included with your Flow cup. For additional information and support please see How to Use Your Flowcup and feel free to Ask Mama Roux if you have any further questions.


To keep your Flowcup squeaky clean, best practice is to wash and sterilise at least once daily during your period.

How to sterilise your Flowcup

  • Place your washed Flowcup inside the sterilising cup.

  • Cover with water until 3/4 full

  • Put the lid on without closing completely and place in the microwave for 3-5 minutes

  • Be careful when taking the sterilising cup out of the microwave, as it will be very hot. Wait until the water has cooled a bit before removing your Flowcup.

Another method that can be used for cleaning is to simply place your clean menstrual cup inside the sterilising cup, cover with boiling water (and a tsp of Orange & Lavender Powdered Cleanser - optional), place the lid on and leave for 20 mins. Rinse thoroughly before reinsertion.

For additional information and support check out: