Sofie Fertility Planning Panty Liners, 3 Boxes (15 sheets) Timing Check, New, Unused ♪ Product Description ♪ Sofie's "Panty Liners to Check Fertility Timing" Recommended for those who want to easily check changes during ovulation and understand their timing. Although new and unused, the boxes will be removed for shipping to reduce shipping costs. The contents are individually wrapped and stored cleanly.