Ilusion1037 - Women's Lace Edge Bloomer Pettipant Slip

What is the length on these for the large, is it atleast 20"?

What is inseam length for size L?

what do i do now. i rebooted and the size selector still doesn't work. so what do i do?

So is this satin or nylon? Even the answers here are confusing (the description already is).