Let me start by saying this waist trainer has been a game-changer for my workouts and daily posture. The double-belt neoprene design provides serious compression without feeling like I'm being suffocated - a rare find in waist trainers!

The steel bones offer incredible back support that I didn't even know I needed. As someone who sits at a desk all day, I've noticed my posture improving significantly since wearing this. The zipper closure is sturdy and stays put, unlike cheaper models I've tried.

Now for the sweat factor - wow! During my HIIT sessions, this thing turns into a personal sauna. The thermal activity is no joke, and I can literally see the sweat beading up within minutes. Just be warned - you'll need to wash it frequently because it absorbs odors.

Size tip: Definitely go by their measurement chart carefully. I'm 5'6" with a 30" waist and found the Medium perfect when following their sizing guide exactly. Some reviewers mentioned sizing up, but that would have compromised the compression for me.

The only con? The lower belt does tend to roll up slightly during intense movement. It's not a dealbreaker for me, but something to be aware of if you're doing lots of bending or twisting exercises.

After 3 weeks of consistent use (4-5 hours daily), I've lost 1.5 inches off my waist measurement while maintaining the same weight. Whether it's water weight or actual fat loss, the visual difference is undeniable.