Menstrual cups get most of the reusable period product attention, but menstrual discs — a genuinely different mechanism, not just a variant of the cup — are worth serious consideration, especially if you've tried a cup and found it uncomfortable. Here's the full three-way comparison against cups and period underwear.
How Each One Actually Works
Menstrual cup: Sits lower in the vaginal canal, creates a seal via suction. Removal requires breaking that seal.
Menstrual disc: Sits higher, tucked behind the pubic bone at the vaginal fornix — a genuinely different position, not just a flatter cup. Works by collection rather than suction, which is also why discs are compatible with intercourse, unlike cups.
Period underwear: Absorbent fabric built into underwear, worn like normal underwear — no internal insertion at all.
Capacity Comparison
| Product | Typical capacity | Wear time |
|---|---|---|
| Menstrual disc | 60-80ml | Up to 12 hours |
| Menstrual cup | 20-38ml | Up to 12 hours |
| Period underwear | Varies by absorbency rating, typically lower | Up to 12 hours, heavier flow needs backup |
Why Try a Disc If You've Already Tried (and Disliked) a Cup
The higher placement genuinely changes the experience for a meaningful number of users who find cups uncomfortable due to cramping interference from the suction seal or the lower position pressing on the cervix. Discs also don't require breaking a suction seal for removal, which some users find less awkward.
Learning Curve
Cups generally have an easier first-time learning curve — the insertion mechanics are more intuitive for most people initially. Discs have a steeper first attempt but many users report them becoming just as easy, or easier, once the correct placement technique clicks.
Verdict
If you've never tried a reusable option, start with a cup for the gentler learning curve. If you've tried a cup and found it uncomfortable specifically due to cramping or the suction seal, a disc is genuinely worth trying before giving up on reusables — it's a different mechanism, not just a variant. Period underwear works well as a backup layer for either, or as a standalone option for lighter days.
For the fuller picture on reusable period products generally, see our sustainable period products ranking and period underwear vs menstrual cups.
