This product is legit. Im 511 and 280. Normally I wear a 3xl shirt and have comfort room in it. So I bought a 2xl. It was tight enough to eliminate the MOOBS. but not suffocating. Also one of the best feature of this is its length. I bought this specifically to wearing under a white shirt for a wedding. Couldnt see it and was long enough it didn't ride up at all any part of the night. Pullled down taught, it covered my butt. Very impressed with it. Especially for the price. If I ever needed more than one I would definitely repurchase. If I could give 6 stars I would