For example, suppose you wear a 50 coat, but your waist size is a 48. With a 50 coat, you would think that an X-Large (48 - 50) vest would be fine, but since your waist is 48 ... you would actually do better going with a 2X-Large (52 - 54) vest to accommodate your waist. Even though the vest will be large in your chest area, you can then have your tailor "taper" the vest in the chest area. Here's another example: Suppose you wear a 44R coat but only have a 34 inch waist. In this case, you would go with the Large (43 - 46) vest even though your waist range calls for a Medium. You would then take your vest to a tailor and have them "taper" the vest in the waist area. Remember: it's your tailor who can create perfection.

Boys Backless Vests:
"Boys Small" = 3 - 6 Coat Size
"Boys Medium" = 7 - 12 Coat Size
"Boys Large" = 14 - 18 Coat Size