The new Extra and Overnight pad have been anatomically designed to be used overnight and to provide extra protection for a heavy flow. Now 33% longer than the discontinued Sanitary Pads Day Super Flow. Made with 33% more certified organic cotton allowing it to be 12% more absorbent. Only 100% certified organic cotton has been used for the top sheet and absorbent cotton core. Free from wood pulp, plastics, bleach, perfumes, and dyes and any other potential irritants found in pads.The pads are individually wrapped in a biodegradable biopolymer (Mater-Bi made from corn starch), which is also used for the protective layer. Certified organic by GOTS, ICEA and VEGAN OK