These panty liners have for more perfectly fit all kinds of underwear, either string, panty or panties. The material is not unpleasant (some protects briefs are a bit "plasticized" which irritates and promotes fungal infections, since here it just looks like the fabric, we do not feel them. They did not take off on their own but are no means difficult to take off. Their light scent is nice. Also, the format of 58 is because in a very economical for two months. Basically, that positive points! I recommend!