Me Luna Soft Straight Stem Medium Cup: Fit and Insertion Guide
By Honour Your Flow | Published: 2026-11-06
Category: How-to Guides
A practical guide to the Me Luna Soft Medium straight-stem cup: who it suits, how to insert and remove it when you are ready, and what to check before you buy.
Who the Me Luna Soft Medium straight-stem cup is for
The Me Luna Soft is softer than all the other Me Luna cups. It was specifically developed for women who are particularly sensitive, especially if you find a cup can push on your bladder or partly restrict or slow urine flow. That softness is the main reason to choose it, but it also makes the cup a bit trickier to insert and remove. The manufacturer recommends it for someone who has already mastered menstrual cup technique.
The Medium size is the other half of the fit decision. According to the supplied sizing guidance, Medium suits women 170cm (5'5") or taller with a slim build who have maybe had one or two vaginal births. It also suits women under 170cm with a medium build who have had one or two vaginal births. The guidance gives examples: Karen is 5'4", slim, has had two vaginal births and uses the Medium; Georgia is 5'5", slim, has had three vaginal births and uses the Medium. If you are unsure, the store invites you to email [email protected] before ordering.
What the Me Luna Soft Medium listing confirms
- SOFT Medium Me Luna Menstrual Cup - Straight Stem: Me Luna Soft is softer than all the other Me Luna cups and was developed for women who are particularly sensitive, especially if a cup can push on the bladder or partly restrict or slow urine flow. This is the core reason to choose Soft over firmer Me Luna cups, but it also explains the insertion trade-off.

SOFT Medium Me Luna Menstrual Cup - Straight Stem - SOFT Medium Me Luna Menstrual Cup - Straight Stem: The Me Luna Soft is best recommended for someone who has mastered the technique of inserting and removing a menstrual cup, as it is a bit trickier to insert and remove. If you are buying your first cup, this is a reason to consider whether a firmer cup might be easier to learn with.
- SOFT Medium Me Luna Menstrual Cup - Straight Stem: The Medium size cup is suitable for women 170cm (5'5") or taller, slim build, who have maybe had one or two vaginal births. Also suitable if you are less than 170cm, medium build and have had one or two vaginal births. This is the supplied sizing rule for Medium, so use it as your starting point rather than guessing from flow alone.
- SOFT Medium Me Luna Menstrual Cup - Straight Stem: All Me Luna cups come with full instructions of how to insert and how to clean, and include a natural organic cotton storage pouch. The cup arrives with manufacturer instructions, so follow those for insertion and cleaning rather than relying on general advice.
How to approach insertion when you are ready
The supplied information does not include a step-by-step insertion method, so this guide does not invent one. What it does confirm is that every Me Luna cup comes with full instructions on how to insert and how to clean. Read those instructions first and use them as your primary reference.
Because the Soft cup is floppier than firmer cups, the manufacturer's own guidance is the safest starting point. If you have not used a cup before, the listing's recommendation to master insertion and removal first is worth taking seriously. Practising with a firmer cup or waiting until you are comfortable with the general technique can make the Soft easier to manage.
Checkpoints before you commit to the Soft Medium
- Your height and build match the Medium rule: Use the supplied sizing guidance above. If you are borderline, the store offers email help at [email protected].
- You have inserted a menstrual cup before: The Soft is recommended for someone who has mastered insertion and removal, because it is trickier in both areas.
- You want a softer cup for bladder pressure: The Soft was developed for sensitivity and for cups that push on the bladder or partly restrict or slow urine flow.
- You are prepared to follow the supplied instructions: Insertion and cleaning instructions come with the cup. Use them rather than improvising a method.
What the stem does and does not change
The listing names this cup as the straight-stem version, but the supplied evidence does not describe stem length, trimming guidance, or how the straight stem compares with a ball stem. If stem length is your main concern, ask the store before ordering rather than assuming. The supplied sizing examples and the Soft material are the confirmed details; stem trimming is not covered in the information provided here.
Size examples from the listing
- SOFT Medium Me Luna Menstrual Cup - Straight Stem: Karen is 5'4", has had two vaginal births and is slim. She uses the Medium. A concrete example of the Medium size working for someone under 170cm with a slim build and vaginal births.
- SOFT Medium Me Luna Menstrual Cup - Straight Stem: Georgia is 5'5", she is slim and has had three vaginal births. She uses the Medium cup. Shows that Medium can still suit someone with three vaginal births, so use the full guidance rather than a single factor.
- SOFT Medium Me Luna Menstrual Cup - Straight Stem: Jane is 5'6", she is slim and has had no vaginal births. The listing includes this profile as an example, but the supplied evidence does not state which size Jane uses, so do not assume it confirms Medium for her.
When the Soft Medium is the wrong first cup
If you have never used a menstrual cup, the Soft's extra flexibility may make insertion and removal harder to learn. The manufacturer's own recommendation points experienced users toward this cup. That does not mean you cannot choose it, but go in expecting a steeper learning curve and rely on the supplied instructions.
If your main concern is stem length or trimming, the supplied information does not confirm how the straight stem should be trimmed or how it compares with other stem shapes. In that case, ask the store directly before buying.
