First of all the Ameissy panties provide total protection and absolute comfort from 6 up to 24 hours (depending on the model and the absorbency) without changing your panties while all the conventional protections /like tampons and pads/ need to be changed every 2 -3 hours. All materials in the Ameissy panties are antibacterial, hypoallergenic, breathable and odor-resistant and do not contain any substances harmful to you and the environment unlike most sanitary pads made of plastic and chemical materials.