Ruby Menstrual Cup
This high-quality, reusable menstrual cup is made from 100% medical-grade silicone for comfortable, reliable period protection. Designed for up to 12 hours of wear, day or night, it helps prevent leaks without dryness or irritation.
The classic bell-shaped design with a slightly flared rim opens easily after insertion and forms a secure seal against the vaginal walls. Its silk-smooth, flexible, seam-free construction is easy to insert, wear, remove, and clean, making it suitable for beginners and experienced users alike. Discreet measurement lines help monitor fluid loss for period health or medical tracking.
Buy One, Give One program
When you buy a cup, a second cup is given to a girl in need. Since 2012, Ruby Cup has worked with organisations to provide menstrual care education and reusable cups, helping girls and women manage their periods safely, privately, and with dignity.
Size and Specifications
The Ruby Menstrual Cup is available in two sizes. Choose the first option for light to medium flow and an average to low cervix. Choose the second option for medium to heavy flow and an average to high cervix.
| Specification | Small | Medium |
| Cup body length | 46 mm | 51 mm |
| Stem length | 19 mm | 17 mm |
| Total length | 65 mm | 68 mm |
| Diameter | 40 mm | 45 mm |
| Capacity to air holes | 20 ml | 24 ml |
| Maximum capacity to rim | 24 ml | 34 ml |
Small
The Small Ruby Cup has a 46 mm body, a 19 mm stem and a 40 mm diameter. Its capacity is 20 ml to the air holes and 24 ml to the rim.
It may suit someone who prefers a narrower cup or needs a shorter body. Its lower capacity may also mean more frequent emptying for people with heavier flows.
Medium
The Medium Ruby Cup has a 51 mm body, a 17 mm stem and a 45 mm diameter. It holds 24 ml to the air holes and has a maximum capacity of 34 ml to the rim.
It may suit someone who prefers a wider cup or needs a higher capacity. Consider your available space and comfort preferences when comparing it with the Small.
Understanding capacity
The capacity measured to the air holes is the more useful figure when comparing the cup's usable collection volume before fluid reaches the holes. The maximum capacity to the rim indicates the total volume the cup can hold when filled to the top.
A higher-capacity cup is not automatically the better choice. Comfort and fit should come first.
Not sure which menstrual cup size, shape or firmness may suit you? Choosing the right cup involves considering your cervix height, flow, anatomy and personal preferences.
Explore Period Shop's resources to help you compare options and find a comfortable fit:
If you're still unsure, contact our team for help choosing a menstrual cup based on your individual needs.
Orders are dispatched from Perth, Western Australia every Monday, Wednesday and Friday, excluding WA public holidays. Orders received before 9am AWST on a dispatch day are usually sent that day.
Shipping within Australia
- Free Parcel Post on orders of $75 or more
- $8.50 Parcel Post on orders under $75
- Express Post is available from $5.95
- Tracking is included with every order
- Orders are sent in plain, discreet packaging
Australia Post delivery estimates begin after your order has been dispatched. Express Post provides priority delivery but does not change our dispatch schedule.
International shipping is calculated at checkout and delivery times vary by destination.
View our full shipping and delivery information.
Ruby Menstrual Cup
This high-quality, reusable menstrual cup is made from 100% medical-grade silicone for comfortable, reliable period protection. Designed for up to 12 hours of wear, day or night, it helps prevent leaks without dryness or irritation.
The classic bell-shaped design with a slightly flared rim opens easily after insertion and forms a secure seal against the vaginal walls. Its silk-smooth, flexible, seam-free construction is easy to insert, wear, remove, and clean, making it suitable for beginners and experienced users alike. Discreet measurement lines help monitor fluid loss for period health or medical tracking.
Buy One, Give One program
When you buy a cup, a second cup is given to a girl in need. Since 2012, Ruby Cup has worked with organisations to provide menstrual care education and reusable cups, helping girls and women manage their periods safely, privately, and with dignity.
Size and Specifications
The Ruby Menstrual Cup is available in two sizes. Choose the first option for light to medium flow and an average to low cervix. Choose the second option for medium to heavy flow and an average to high cervix.
| Specification | Small | Medium |
| Cup body length | 46 mm | 51 mm |
| Stem length | 19 mm | 17 mm |
| Total length | 65 mm | 68 mm |
| Diameter | 40 mm | 45 mm |
| Capacity to air holes | 20 ml | 24 ml |
| Maximum capacity to rim | 24 ml | 34 ml |
Small
The Small Ruby Cup has a 46 mm body, a 19 mm stem and a 40 mm diameter. Its capacity is 20 ml to the air holes and 24 ml to the rim.
It may suit someone who prefers a narrower cup or needs a shorter body. Its lower capacity may also mean more frequent emptying for people with heavier flows.
Medium
The Medium Ruby Cup has a 51 mm body, a 17 mm stem and a 45 mm diameter. It holds 24 ml to the air holes and has a maximum capacity of 34 ml to the rim.
It may suit someone who prefers a wider cup or needs a higher capacity. Consider your available space and comfort preferences when comparing it with the Small.
Understanding capacity
The capacity measured to the air holes is the more useful figure when comparing the cup's usable collection volume before fluid reaches the holes. The maximum capacity to the rim indicates the total volume the cup can hold when filled to the top.
A higher-capacity cup is not automatically the better choice. Comfort and fit should come first.
Not sure which menstrual cup size, shape or firmness may suit you? Choosing the right cup involves considering your cervix height, flow, anatomy and personal preferences.
Explore Period Shop's resources to help you compare options and find a comfortable fit:
If you're still unsure, contact our team for help choosing a menstrual cup based on your individual needs.
Orders are dispatched from Perth, Western Australia every Monday, Wednesday and Friday, excluding WA public holidays. Orders received before 9am AWST on a dispatch day are usually sent that day.
Shipping within Australia
- Free Parcel Post on orders of $75 or more
- $8.50 Parcel Post on orders under $75
- Express Post is available from $5.95
- Tracking is included with every order
- Orders are sent in plain, discreet packaging
Australia Post delivery estimates begin after your order has been dispatched. Express Post provides priority delivery but does not change our dispatch schedule.
International shipping is calculated at checkout and delivery times vary by destination.
View our full shipping and delivery information.