What a specification can say
A product specification can give concrete product facts when those facts are listed by the manufacturer. For example, the supplied MonthlyCup Normal Pink product information lists diameter, length without stem, total length including stem, capacity up to holes, material wording, manufacturing location, and included items.
| Specification | MonthlyCup Normal Pink listing detail | What that detail is useful for |
|---|---|---|
| Diameter | 43 mm | Comparing width between models |
| Length without stem | 55 mm | Comparing cup body length |
| Total length | 65 mm including stem | Understanding the listed full length |
| Capacity | 22 ml up to the holes | Comparing listed capacity |
| Material and origin | Medical-grade silicone; manufactured in Sweden | Understanding the manufacturer’s listed product facts |
| Included items | Fabric storage pouch and instruction manual | Knowing what the listing says is supplied |
What a specification cannot say by itself
Specifications become misleading when they are asked to prove things they do not prove. MenstrualFacts.com avoids those leaps.
- It cannot guarantee personal fit. MonthlyCup’s guide advises comparing measurements and individual flow and preferences, and says no model is guaranteed to fit everyone.
- It cannot guarantee leak prevention. A listed diameter or capacity does not, by itself, prove an outcome for every user.
- It cannot establish medical suitability. Product information is not individual diagnosis or medical advice.
- It cannot prove a fixed lifespan. The supplied source pack supports replacing silicone that is damaged, sticky, or noticeably changed; it does not support a fixed lifespan claim for new copy.
- It cannot prove quantified environmental benefit. The NHS supports that cups can be washed and reused, but the supplied source pack does not support a specific environmental calculation.
Why “capacity” is easy to overread
Capacity sounds like it should tell you how long a product will last before emptying. In reality, the supplied MonthlyCup instructions say to empty according to flow and no later than 12 hours. Flow and preferences are individual, so a static capacity number should not be converted into a universal schedule.
Why “size” is not one rule
The MonthlyCup guide says age or childbirth alone are not a size rule. That matters because simple size charts can feel convenient, but the supplied guide supports a more cautious approach: compare measurements and consider individual flow and preferences.
When the question is not a product-spec question
The NHS notes that cycle patterns vary. It also says new bleeding between periods, after sex, or after menopause should be discussed with a doctor. A product listing cannot evaluate those situations.
For current MonthlyCup product and shopping assistance, use the live support page. For health concerns, contact a doctor or qualified health professional.