Vanity FairWomen's Seamless Slip Shapewear Shorts, No Show Look Under Dresses, Skirts & Pants

Do these make a swish swish sound as you walk when thighs rub together? or are they silky and glide with you?

Is the fit strong compression, or does the fit have a somewhat billowy give to them?

What fabric are they?

Is this waistband comfortable (large or tight?)?