- o.b. Classic M/L menstrual panties designed for medium to heavy flow - Provide absorbent protection for up to 12 hours, ideal for day and night - Top layer made of 100% organic cotton, soft, breathable, and quick-absorbing - Absorbent core and side barriers prevent leaks and keep you feeling dry - FormFlex design fits perfectly to the body for greater comfort and security - Machine washable at 60 °C and reusable for up to 4 years, helping to reduce plastic waste - Free from biocides and harmful chemicals, tested according to STANDARD 100 by OEKO-TEX - Each menstrual panty can replace up to 4 changes of regular pads - Size M/L, black color, 1 unit per package