It will not leak, as long as it is inserted properly. To avoid such a thing from happening, always make sure that the cup has fully opened after insertion and that it has created a suction seal to prevent leaks.
Will it leak?
About the Author: Mina Deocareza
Mina Deocareza works a publicity and content officer for Sinaya Cup. She is a professional writer and editor who has worked for various brands and publications in the Philippines and abroad.