From Muna and Broad:
The Muna and Broad Undies and Period Undies are specifically designed to fit large bodies. They feature a wide gusset, full coverage, comfy elastic at the waist, and a choice of fold over or picot elastic at the leg openings. They sit at the belly button and the back rise is slightly higher for perfect coverage.
The period undies have a large pad suitable for day wear or overnight and the level of absorbency is completely customizable.