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07 July 2014 @ 02:24 am
Hi again! Thank you for all the encouragement and support. Have you guys considered creating a numeric system for the stiffness of cups? Like, ranging from 1-10? It could be something even menstrual cup manufacturers may start using on a whole, so as to let their customers know the firmness of their cups, in relation to other cups. It also makes it easier for some1 who may not have a perfect cup (but it's almost perfect) in terms of stiffness, to decide on their Goldilocks cup.
 
Kai: 2Cupskuradi8 on July 7th, 2014 12:43 pm (UTC)
No manufacturers won't use it. Why would they risk steering potential customers to another brand? But there are a couple on personal blogs such as:
http://menstrualcups.wordpress.com/2009/07/24/squishiness-ratings/
http://menstrualcupinfo.wordpress.com/cup-stiffness-comparison-chart/
Sal McGhostface Killahbeuk on July 7th, 2014 04:24 pm (UTC)
yeah, and this comm may be the most well-known forum on menstrual cups, but that doesn't translate into being influential with manufacturers thereof.

Sorry, OP.
mshanai on July 7th, 2014 10:33 pm (UTC)
I don't think it's against their interests to provide this information to customers. Women don't all have the same preferences for cup stiffness, and most aren't nearly as informed as the people in this community about the range of options. Also, some manufacturers (like Yuuki) offer several cups that differ in stiffness alone, so for those customers who do care, it would be useful to know how each cup compares to other cups in the same line or to other brands.

It wouldn't be that hard to measure stiffness objectively--it's force divided by displacement. Rig up a way to apply the same small amount of force to several cups (like maybe a small toy truck) and see how much each cup gets smooshed.
elisamba on July 9th, 2014 10:16 am (UTC)
You probably could objectively rate the firmness of cups, but not their "poppability". The worst are firm cups that are still hard to open once inserted. On the other end of the spectrum, some cups pop open easily despite being soft.

But there is still that subjective issue, which is the muscle tone of the end user, that affects how well a cup pops open.
nocebo_domingonocebo_domingo on July 12th, 2014 05:59 pm (UTC)
Adding to the complexity is that manufacturers seem to tinker with their products, including adjustments to the firmness. It can be impossible to know whether the cup you're squishing is the same as the cup available for sale today. Plus stockists might have a generation of a cup that is a month or a year old - not a bad thing, just not the same thing the manufacturer is selling this week.
trejoytrejoy on July 12th, 2014 08:05 pm (UTC)
True that!
Menstrualcup.coloveyourcup on July 23rd, 2014 07:39 am (UTC)
Firmness of menstrual cups
Yes I have been struggling with that, i'd like to add stiffness as a column in my comparaison table. Brands often refers as "shore"

MeLuna Classic has a softness of 40 Shore
MeLuna Soft has a softness of 30 Shore, and is therefore 25% softer than MeLuna Classic
MeLuna Sport has a softness of 50 Shore, and is therefore 25% more resilient than MeLuna Classic

Yuuki Classic has shore 60.
Yuuki Economic has shore 50.
Yuuki Soft has shore 40.

I'm going to send a newsletter to manufacturer to ask if they could all give that "shore measure"
it would be a helpful indication even though the feel of the cup can varie depending on the silicone.



Edited at 2014-07-23 07:40 am (UTC)