Size Child Small

This will fit the majority of 6 year olds now
and may last a petite girl for 3 years.
Size Child Medium -
size

A fair bet to last a small to average child for 3 years
and may allow a small child to wear a sweater/jacket
underneath.
Size Child Large

Best bet to last 3 years. It will be large for the majority
of 6 year olds, but will have room for a sweater/jacket
and will allow for growth over 3 years.
Also gives sufficient space for patches.
Since 1999 we have sold this size more than 2 to 1
for children who try on our samples.
(Tandy labels this size as "Small Adult 4650-01")
Size Adult Medium

A very snug 42 coat size.
You probably need the Large size to accommodate
a sweater/jacket, if you are an actual 42.
Size Adult Large

This is a little smaller than coat size 46-48.
We have sold this size more than 3 to 1
over the Medium size.
Size Adult Large Long -
size

Same as the Adult Large, except it is longer
for the taller dad (6' 2" and taller).
Size Adult Extra Large -
size

This vest is approximately a coat size 52.
Gives more girth around plus additional length for the
larger dad. We sell this size to about 8% of our dads.
This size replaces our Large size plus Extension kit.