Leading the way: I was looking vests to be worn under the shirt business, no t-shirts. I think it is important to decide in advance, because I can not buy a product mEn that both T-shirt as well as an undershirt meets all requirements. We here headed in the other reviews. I was important to: 1) V-neck, which is even with open shirt (not seen 1 button) 2) tight 3) Sufficient quality which the terms of the thickness of the fabric 4) fit All requests are super satisfied. Size as often mentioned a number chosen to be smaller. I am 1.85 cm tall at 84 kg. Mir M fits perfectly. The arms are not too far and not too tight. Bin average trained about my upper arms. Lean contemporaries are here have some space in the sleeve. The quality made me surprised, did not expect at this price with such good merchandise. The workmanship is good and after normal machine wash without drying the vests stay fit. At this price you can not go wrong. I'm going to order a 4 pack and my previous vests muck.