Merula Menstrual Cup One Size
The Merula Cup is made in Germany from 100% medical-grade silicone and features a unique rounded shape, firm rim and flexible ladder-style stem.
Designed to suit a wide range of body types, cervix positions and menstrual flows, its compact shape sits lower in the vaginal canal and is ideal for people with a low cervix. The firm silicone rim helps the cup open easily and stay in place, while the softer, thinner body makes it comfortable to wear. Suitable for all pelvic floor strengths and beginners, the ladder-style stem is easy to grip and can be trimmed to create a custom fit. If you have a medium or high cervix, avoid trimming the stem.
With a generous 38ml capacity, the Merula Cup is suitable for heavy flow and can be worn for up to 8 hours, including overnight. For super-heavy flow, the larger version offers a 50ml capacity.
Size & Specifications
| Specification | Merula One Size |
| External rim diameter | 40 mm |
| Widest body diameter | 46 mm |
| Cup body length without stem | 39 mm |
| Total length with full ladder | 72 mm |
| Total length with shortened ladder | 61 mm |
| Total length with further shortened ladder | 50 mm |
| Capacity to top rim | 38 ml |
| Rim firmness | Firm |
| Body firmness | Soft, thin and flexible |
| Maximum wear time | 8 hours |
Understanding the measurements
The 40 mm measurement refers to the rim, while the rounded body reaches 46 mm at its widest point. Both measurements are important when considering insertion, pressure and comfort.
The 38 ml capacity is measured to the top rim rather than to the air holes. Your usable capacity may be lower depending on your cervix position and how the cup sits.
Adjusting the ladder stem
The Merula has a flexible three-rung ladder stem that can be shortened to suit your anatomy and preferences.
It offers three length configurations:
- 72 mm with the full ladder stem
- 61 mm with the shortened ladder
- 50 mm with the further shortened ladder
Start with the full ladder and check how the cup sits before deciding whether to shorten it. A shorter stem may be more comfortable if you have a lower cervix, while retaining more of the ladder may make removal easier if the cup sits higher.
Do not remove the entire ladder, as this can make the cup more difficult to retrieve.
Cervix height, vaginal space, flow and comfort preferences are more useful considerations when choosing a cup than age or birth history alone.
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.
Merula Menstrual Cup One Size
The Merula Cup is made in Germany from 100% medical-grade silicone and features a unique rounded shape, firm rim and flexible ladder-style stem.
Designed to suit a wide range of body types, cervix positions and menstrual flows, its compact shape sits lower in the vaginal canal and is ideal for people with a low cervix. The firm silicone rim helps the cup open easily and stay in place, while the softer, thinner body makes it comfortable to wear. Suitable for all pelvic floor strengths and beginners, the ladder-style stem is easy to grip and can be trimmed to create a custom fit. If you have a medium or high cervix, avoid trimming the stem.
With a generous 38ml capacity, the Merula Cup is suitable for heavy flow and can be worn for up to 8 hours, including overnight. For super-heavy flow, the larger version offers a 50ml capacity.
Size & Specifications
| Specification | Merula One Size |
| External rim diameter | 40 mm |
| Widest body diameter | 46 mm |
| Cup body length without stem | 39 mm |
| Total length with full ladder | 72 mm |
| Total length with shortened ladder | 61 mm |
| Total length with further shortened ladder | 50 mm |
| Capacity to top rim | 38 ml |
| Rim firmness | Firm |
| Body firmness | Soft, thin and flexible |
| Maximum wear time | 8 hours |
Understanding the measurements
The 40 mm measurement refers to the rim, while the rounded body reaches 46 mm at its widest point. Both measurements are important when considering insertion, pressure and comfort.
The 38 ml capacity is measured to the top rim rather than to the air holes. Your usable capacity may be lower depending on your cervix position and how the cup sits.
Adjusting the ladder stem
The Merula has a flexible three-rung ladder stem that can be shortened to suit your anatomy and preferences.
It offers three length configurations:
- 72 mm with the full ladder stem
- 61 mm with the shortened ladder
- 50 mm with the further shortened ladder
Start with the full ladder and check how the cup sits before deciding whether to shorten it. A shorter stem may be more comfortable if you have a lower cervix, while retaining more of the ladder may make removal easier if the cup sits higher.
Do not remove the entire ladder, as this can make the cup more difficult to retrieve.
Cervix height, vaginal space, flow and comfort preferences are more useful considerations when choosing a cup than age or birth history alone.
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.