If you're ordering a jacket, it's easiest to size the vest off of your jacket size. If you are ordering a modern jacket, you should over the same size vest. For example, if you order a Modern 42 Long Jacket, you would want a 42 Tall vest. Or, if you are ordering a Modern 42 Regular or Short Jacket, you would want to order a 42 Standard vest.
For slim jackets, you should order your vest one size down from your jacket. If you were to order a Slim 44 Long jacket, you would want to order a 42 Tall vest. If you were to order a Slim 44 Regular or Short jacket, you should order the 42 Standard vest.
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