Aiwo
https://www.facebook.com/NOOD-668883369920060
(Purchase from Amazon & Amazon)
Country of origin: China
Composition: Medical Grade Silicone
Sizes: One Size
Dimensions: 42mm diameter, 79mm long including stem (stem is not removable)
Capacity: 25mls to rim
Stem: Hollow tube with valve
Measuring Lines: Unknown (there appears to be markings on the cup)
Cost (RRP): $29.99-$55 [Currency Converter]
Unique design?: Yes
Other Details: These cups were first mentioned in my “unnamed discharge cups” post. There is a video of the operation of the valve stem here. The cup is emptied while left inserted, by squeezing the stem to open the slit that blocks off the inside of the stem (I have not tried this style of cup to know how efficient this method is, or if it leaks). Appears to have 2 different kinds of packaging, depending on if you buy the set of 2 or the single cup (both look very unique and elegant)
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About
A menstrual cup is form of reusable menstrual protection. It is inserted into the vagina to collect menstrual fluids. Once in place it forms a seal, preventing blood flowing out of the vagina by collecting it in its “cup” shaped reservoir. Unlike a tampon which absorbs the blood along with the vagina’s natural secretions, a menstrual cup simply holds the fluids until you remove it – so they do not dry out the vagina and do not hold the TSS risk that tampons do.
They hold around 20-30ml, which is for most women will cope with a full day without emptying, and at most perhaps you would need to empty it a few times a day for a very heavy flow. A menstrual cup will last (with proper care) for around 10 years, perhaps longer, so while the initial outlay is high, it pays for itself with savings pretty quick.
This is a sister site to www.clothpads.org. For information on cloth pads, please check that website.
This blog is a place to find information about the different cup brands I know about. All the brands I am aware of, are listed in the menu – Clicking on these brand-name links will take you to a page of information I have about them.
Menstrual Cups 
So I know very little Mandarin but one of the few phrases I’ve been taught is “wo ai ni” for “I love you.” So does this cup’s name translate, then, to something like “Love Me”? or “Love Myself” maybe?
I bought this cup a year ago to help with irritation from pulling a cup in and out a lot. There is a little taper of silicone that goes past the end of the valve that suctions to my labia after sitting or movement(excercise/yoga etc.) and it can be very painful! i cut the sides to see if that would help break the suction but i still get pinching. This is also very long! I used a Diva cut comfortably enough but this one you can definitely feel the stem on even with a mid-high cervix. Hope this helps people!