The padding adds just enough lift without looking bulky under jeans, and the waistband stays put all day even after sitting for hours. I've worn it twice already and it genuinely smooths everything out without rolling down at the top.
Waist definitely looks slimmer the moment I put it on, and the padding gives a nice lift without feeling bulky. Only took off a star because the high waist rolls down a bit when I sit for long stretches, but it's fine for everyday wear.
The high waist does its job cinching things in, and the padding is subtle enough to feel secure. But the fabric runs a bit warm for daily wear, so I only reach for it on cooler days. It's fine, just not the all-day miracle the description implies.