What is the extra layer in underwear for?

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Tags

1. #front
2. #underwear
3. #women
4. #material
5. #against
6. #looks
7. #uncomfortable
8. #reason
9. #sewed
10. #sides
11. #inside
12. #pretty
13. #while
14. #pocket
15. #supposed
16. #extra
17. #particular
18. #would