Caution. These are the actual jacket outer shell manufacturing measurement specifications, not your body measurements.
A -Sleeve length (From collar seam to end of sleeve including the shoulder and cuff).
B -Shoulder width (The length between the two shoulder seams)
C -From the collar seam to bottom of waistband
D -Waist size (Jacket Waistband circumference)
E -Chest size (Jacket Chest outside Circumference*)

All measurements are in inches. 1 inch = 2.54 cms.

*Jacket Measurements are a quideline*. Normally, we don't reccommend upsizing adult sizes as jackets are full cut. All measurements in inches.
Caution especially for youth sizes:
quilted lining in small jackets can make both the body and sleeves feel tighter.
                 
  ADULT JACKET
MEN'S MEASUREMENTS
             
INCHES   S M L XL 2XL XXX 4XL
SLEEVE A 35 35.75 36.5 37.25 38 38.5 40
SHOULDER B 24.5 25 25.5 26 26.5 27 28
BACK C 27 27.5 28 28.5 29 29.5 30
WAIST D 30 32 34 36 38 39 40
CHEST CIR' E 50* 52* 54* 56* 58* 60* 62*
CUFF   3.25 3.5 3.75 4 4.25 4.25 4.25
                 
  LADIES JACKET  SIZE MEASUREMENTS *OPTONALLY AVAILBLE FROM 1 FACILITY*
             
INCHES   S M L XL 2XL XXX 4XL
SLEEVE A 33.5 34.25 35 35.75 36.5 37.5 38
SHOULDER B 23.5 24 24.5 25 25.5 26.5 26
BACK C 26 26.5 27 27.5 28 28.5 29
WAIST D 26 28 30 32 34 35 36
CHEST E 46* 48* 50* 52* 54*
56*
58*
CUFF F 3 3 3.25 3.5 3.75 3.75 3.75
                 
                 
  YOUTH  ASK
 YS
 YM
 N/A
 YL
   
YOUTH APPAREL SIZE
 
2-4
6-8
10-11
12-13
14-15
16-17
18
SLEEVE A 25.5 26.75 28 29.25 30.5 32.00 33
SHOULDER B 19.5 20 20.5 21 21.5 22 22.5
BACK LENGTH C 19 20 21 22 23 24 25
WAIST D 20 21.5 23 24.5 26 28 30
CHEST E 32 34 36 38 40 42 44
CUFF F 2 1/4 2 3/8 2.5 2 5/8 2 3/4 2 7/8 3
                 

*NOTE*
*Jackets may vary in finished size from one (1) inch in smaller sizes to +/-2 inches in sizes XX up.
This is due to pattern sew.
Jackets are full cut and custom made not custom fitted.
 

We use the same sizing templates as many other USA  and international Letter Jacket suppliers.

Youth jackets with quilted/insulated lining may feel tight.