Menstrual Cup Size Guide
Period care

Menstrual Cup Size Guide

What’s the deal with the Oi Cup™?

Menstrual Cups can seem a bit scary to begin with, but with patience it will soon feel natural. Users tell us the Oi Cup™ is a complete game changer. Made from safe, comfortable TPE (Thermoplastic Elastomers), once in place, it gives you more hours of freedom than when using a tampon or pad. And because it’s reusable, it’s the zero waste way to manage your period.


Which size should I use?

The Oi Cup™ is available in three sizes to suit different people and their flow. The following is a guideline, but it may take time to work out what size fits best for your unique shape.

Small: Suitable for those under 18 years old, who do not have sex regularly, or those who are smaller inside.

Medium: The most common size & suitable for those over 18 years old, & those who have not given birth vaginally.

Large: For those who are larger inside, this may be because they have given birth vaginally.       
Please note that the Oi Cup™ is a personal hygiene medical device, and as a result used cups may not be returned or exchanged.

No Greenwashing.