Warner'sWomen's Blissful Benefits Dig-Free Comfort Waist with Lace Cotton Hipster 6-Pack Ru2266w

Are these really cotton? I do not want to get satin. I purchased 2 sets before. 1 set ended up being satin for another listing despite saying cotton.

Do you get pantie lines?

Is a size 8 underwear a large or extra large?

are these panties all 100 percent cotton?