1，Men's Vest Size -----------------------
Small: Chest - 40.5" Waist - 38.5" Length - 26"
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Medium: Chest - 42.9" Waist - 40.9" Length - 26.4"
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Large: Chest - 45.7" Waist - 43.7" Length - 27.2"
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X-Large: Chest - 48.8" Waist - 46.9" Length - 27.9"
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XX-Large: Chest - 52" Waist - 50" Length - 28.7"
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3X-Large: Chest - 55.1" Waist - 53.1" Length - 29.5"
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1-2 inches error is within the permissible range.
2，Waistcoats are a practical addition to your outfit, as well as a stylish one; in the Winter they provide an extra layer of warmth and in the summer they allow you to strip off your jacket, roll up your sleeves, and still look put-together.

3，Match your trousers and jacket to your waistcoat is great for work, dinners and parties; Or you can pair a pair of slim fitting jeans or chinos, a pair of joggers to keep things casual. so for the time being a dress vest is an eye-catching look as well as an increasingly popular one.