Thank you for viewing my products from among many others (*´∇｀*) This is a handmade cloth menstrual pad *with a fully breathable waterproof layer* M size *unbleached, additive-free flannel*. *Structure* From the skin side... Unbleached, additive-free flannel + flannel x 2 sheets + pile fabric 2 sheets + breathable waterproof fabric + cotton fabric Size... Length 24cm Width 17.5cm Snap... Plastic snap This has a total of 7 layers. * Breathable waterproof fabric... It allows air to pass through but not liquids, making it a breathable waterproof cloth menstrual pad. I use the same waterproof fabric as cloth menstrual pad specialty stores♪ * This is the price for a set of 4. ※This item cannot be sold individually. *Unbleached, additive-free flannel... The strong nap is fluffy, and it has excellent moisturizing and absorbency properties, making it a standard fabric for cloth menstrual pads♪ * Please wash once before use. This is a handmade item made by an amateur. I make them with all my heart, but I apologize for any crooked seams or frayed fabric. Please purchase only if you understand.♪