Keeper & Moon Cup (US) vs. Oi Cup | Menstrual Cup Comparison










Small (B)
45 mm
79 mm
54 mm
25 mm
21 ml
25 ml
4.5 /5
4 /5
4 /5

Large (A)
46 mm
79 mm
54 mm
25 mm
25 ml
29 ml
4.5 /5
4 /5
4 /5

Small
35 mm
60 mm
48 mm
11 mm
17 ml
22 ml
2.5 /5
3 /5
2.5 /5

Medium
43 mm
67 mm
55 mm
12 mm
22 ml
27 ml
2.5 /5
3 /5
2.5 /5

Large
46 mm
67 mm
55 mm
12 mm
27 ml
32 ml
2 /5
2.5 /5
2 /5
Found any errors in our measurements? Let us know!
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