I give them two star just for the fact that they are 100% made from pure organic cotton, and there is no plastic in the product or the packaging. There are also zero chemicals or allergens which sets them apart from all other sanitary pads. These particular ones along with the non-curved ones, however, are tiny. Not just very very short, but also very thin. They cover nothing so leaks are to be expected. Also i don't get the curved feature. There is no curve to them neither in the front not the back (maybe a slight one compared to the regular ones, but it doesn't make a difference). Also the glue is not strong at all, they move a lot. All in all, they don't cover either menstration (even light ones) nor leaks, but their composition in terms of materials is top noch. I would go for the ultra or long ones of the same line instead.