Answer (1 of 4): Its not a pocket. Some panties don't put a stitch line across that section of the crotch liner so it will be more comfortable on the who who.
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What is the pocket in women's underwear for? – ThirdLove
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Why do woman's panties have a pocket by the crotch? - Quora
Why are there sometimes pockets in panties? - Quora
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How many other men wear women's underpants for support? - Quora