A useful product page can explain dimensions, materials listed by the manufacturer and instructions. It should not imply guaranteed fit, leak prevention, medical suitability or independent ranking unless that evidence is actually documented.
The NHS describes period products as items that absorb or collect menstrual flow. Pads and tampons absorb it. Cups collect it and can be washed and reused. Reusable period underwear is another option.
The NHS also notes that product choice is personal and that cups and tampons can take practice, especially when someone is starting periods.
This is general information from NHS period pages and is not a recommendation for a specific brand.
The manufacturer’s guide lists three models and advises comparing measurements, individual flow and preferences. Age or childbirth alone are not a size rule, and no model is guaranteed to fit everyone.
| Model | Diameter | Cup length | Total length | Capacity to holes |
|---|---|---|---|---|
| Mini | 37 mm | 45 mm | 55 mm | 15 ml |
| Normal | 43 mm | 55 mm | 65 mm | 22 ml |
| Plus | 47 mm | 55 mm | 65 mm | 43 ml |
Source boundary: these measurements come from MonthlyCup manufacturer information, not from an independent comparative test.
The listed MonthlyCup Normal model has a diameter of 43 mm, length of 55 mm without stem, 65 mm including stem and capacity of 22 ml up to the holes. The manufacturer lists medical-grade silicone and manufacture in Sweden, with a fabric storage pouch and instruction manual supplied.
It does not claim perfect fit, guaranteed leak prevention, quantified environmental benefit, fixed lifespan, medical suitability or verified cost savings. Those claims require separate documented support.
MonthlyCup’s guide instructs users to wash hands, empty according to flow and no later than 12 hours, and release the seal before removal rather than pulling the stem alone. It also says to follow the supplied instructions, boil before first use and between periods as instructed, dry fully and store with air circulation, and replace silicone that is damaged, sticky or noticeably changed.