This all-in-one model with wings by Imse Vimse is secured in place under your panties with 2 snap fasteners. The pads are made of 100% organic cotton. All the sanitary pads are reinforced with a thin layer of polyurethane laminated polyester to make them leakproof. Tip: If you buy enough pads, you can wash them all at the same time when your period is over. 4 packets of regular pads, 2 packets of night pads and 2 packets of panty liners is probably enough for one period.