ADAMen's Slimming Body Shaper Vest Shirt Abs Abdomen Slim Stretchable Tummy Tucker Slim Fit Vest

I wear Medium size shirts and baniyann size 85 half hand sleeves not vest type so in this vest which size should i choose and exchanges if not fit??

What is washing procedure?

Me 100cm baniyan to pahanta hu to muje konsa lena padega

What size suitable for 44 or 46 shirt size