There is a double layer inside at bottom of panties (gusset). What

Why are there sometimes pockets in panties? - Quora

Why Is There a Pocket in Women's Panties?

Do some women not wearing regular panties because of the visible panty line (V.P.L) problem? - Quora

What were the reasons behind the invention of panty? - Quora

What is a Gusset?, Blog

Women's Underwear That Won't Give You A Wedgie In The Front

Why are female underwear called panties? - Quora

Is it normal to see if women's panty-lines are visible through their pants? - Quora

Why do I have orange stains on my panties and they don't usually wash off? - Quora

Women's Underwear That Won't Give You A Wedgie In The Front

There is a double layer inside at bottom of panties (gusset). What is it meant for? Some of them are open from the front side (inside) and that is very irritating.

Bintang Fashion Women's Mid Waist Plus Size Striped Underwear Panties L-3XL (3Pcs In 1 Set)