INNERSYWomen Period Pants High Waist Postpartum Underwear Leakproof Menstrual Knickers Pack of 3OEKO-TEX STANDARD 100

hi my name is chris i enjoy wearing women's clothes i am a size 18 in women's size will the briefs fit me ok and be comfortable in them or a size 20

What size do you need to buy if you are size 16-18?

DO these work to help with a sweaty crotch?

Is this item non returnable? Tried one pair over my own underwear.