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Flex Cup | Size Slim Fit - Menstrual Cup Review
Editor's Rating on Model:
/ 5
Users' Rating on All Models:
/ 5
All Models & Sizes from Flex Cup
Other Brand Names: Aka Keela Cup

Material: Silicone

  • Rim: Medium-sized band of silicone that sits at the mouth of the cup.
  • Secondary Rim: A wide band of silicone that has a low profile transition from the body to the upper rim of the cup.
  • Body: Bell-shaped
  • Air Holes: Four medium sized holes
  • Stem: A solid piece of silicone that is semi-customizable. While the stem is firm, it is still flexible. The ring at the end is thin and stretchy, but sturdy. It can not be trimmed. The stem with just the ring exposed is 28mm. The total length of the cup with the stem in this position is 74mm. The stem can be moved up or down to suit the users' length. The total length of the cup with the stem will be between 74-84mm.
  • Seams: A flash line can been found around the inside and outside of the rim, the length of the stem, and the ring tip
  • Markings: "flexcup" and and measurements 3.5ml & 5ml on the inside of the cup.
Colors: Opaque black

Overall Impression: The Flex Cup took over the Keela Cup while it was still campaigning on Kickstarter. These cups were specifically designed for "changing out your cup as easy as removing a tampon". While the concept is innovative, the design may not be a comfortable fit for everyone. Since the patent "pullstring" connects to the rim from the inside and is positioned in the center, it may inhibit the cervix from situating correctly. The "slim-fit" size would be suitable for those with a low cervix.
Description Videos and User Reviews Have any video suggestion? Let us know!

43 mm
74 mm
46 mm
28 mm

20 ml
25 ml

3 / 5 (Rim)
3.5 / 5 (Body)
3.5 / 5 (Overall)

Found any errors in our measurements? Let us know!