They'll see the effect, but they won't see the panty lines! These shaper panties are more than underwear: each one is made of our signature soft flex fabric for super comfy compression. They comfortably, lightly smooth out your curves by compressing your mid-to-lower tummy. The sheer SmartLace® bottom hides cellulite and doesn't show under clothes. These shapers feature an innovative thong design to give your butt a little lift.