VictorySweety Big Girl's Period Impermeable Underwear Briefs - 4 Pieces The model is wearing the back side to show what this inside looks like Special for period girls;It serves as extra protection from leaks. You need to add the pad/tampon. The underwear protects you if there is an overflow from the pad/tampon. Material: 92.3% cotton, 7.7% spandex Soft, Breathable and natural because of 100% cotton lining material Please choose the correct size according to the size chart below (in product description) before purchasing