Women’s Invisibly Smooth Slip Short Panty. For a clean finish under clothing with no lines or show through try our new invisibly smooth slip short. Feminine detail and a lightweight design make it perfect to wear every day. Very nice! Not too tight, because the object here was to provide an absence of panty lines, even at the end of it on the thighs, and because it’s not too tight, it works perfectly for both skirts and pants (and shorts and dresses, etc).