Matte elastic is my favorite elastic to use when sewing panties. It is thin and soft, but provides enough stretch to hold the panties in place. If you'd like to try some out, you can find matte elastic in colors from Sew Sassy, and black and white from Fabric Depot. Both vendors can be found on my Resources page.
I design lingerie sewing patterns for everyday comfort and feminine style in an inclusive size range. Fill up your underwear drawer with beautiful custom-made bras and panties in your favorite fabrics and trims, designed to fit your body.