Okay, let me confess—I never thought I'd be the type to rave about shapewear. But this neoprene waist trainer? It's like a secret weapon I didn’t know I needed. The U-shaped push-up design actually makes my chest look perkier (bonus!), but honestly, I LIVE for how it fixes my slouch. As someone with chronic laptop hunch, the steel bones and adjustable straps force me upright like a stern but loving grandma.

During workouts? Holy sweat fest. I wore it under a loose tank during spin class and emerged looking like I’d showered in my clothes—but my core felt supported, not crushed. Pro tip: The zipper is WAY easier than hook-and-eye closures if you’re impatient like me (though wrestling into it still feels like a CrossFit warmup).

Size note: I’m usually a medium, but sized up after reading reviews—smart move. The L fits snugly on the middle hook row after two weeks of wear, and the neoprene hasn’t stretched out weirdly. It does smell faintly of rubber at first (air it out overnight), but now it just smells like… determination.

Unexpected perks? Wearing it under sweaters gives me Victorian heroine vibes, and my lower back pain from old yoga injuries has dialed way down. Downsides? Not magic for weight loss (shocker), and you’ll want to hand-wash it—tossed mine in the machine once and the zipper got moody.

Final verdict: Part posture corrector, part sauna suit, all surprisingly addictive. If you want instant waist definition or back support that doesn’t feel medieval, this thing delivers.