Let me start by saying this: if you're looking for a compression shirt that'll make you feel like Batman suiting up, this one's for you. The Wonderience Compression Shirt with zipper is an experience - from the initial struggle of putting it on to the surprising comfort once it's in place.

The zipper? Well, it's a love-hate relationship. While marketed as an easy-on feature, I found myself wrestling with it more than I'd like to admit. Getting those first few teeth to connect requires some serious maneuvering, especially if you've got love handles. Once zipped though, the compression is impressive - it really does flatten everything out.

Comfort-wise, I was pleasantly surprised. The fabric (60% nylon/40% spandex) breathes better than expected during workouts. It's not magic - you'll still sweat - but it doesn't feel like a plastic bag against your skin. The double-layer front does an excellent job smoothing out problem areas without being unbearably hot.

Sizing is TRICKY. Multiple reviewers (myself included) found the sizing runs small. I'm typically between L-XL in most brands but needed to size up here for proper compression without feeling like a stuffed sausage. Pro tip: check the size chart carefully and consider going up a size unless you want maximum squeeze.

The back support with steel bones is subtle but effective for posture correction during long work days. However, taller users (6ft+) note the length could be better - it tends to ride up slightly during movement.

Final verdict? It works well as shapewear under dress shirts and provides decent workout support too. Just be prepared for the zipper learning curve and potential sizing headaches.