Flightsuits:

Chest sizes in inches:
Small(33-37), Medium(37-41), Large(41-45), XLarge(45-49),
2XL(49-53), 3XL(53-57), 4XL(57-61), 5XL(61-65)

Coveralls, Overalls:

Chest sizes in inches:
Small(33-37), Medium(37-41), Large(41-44), XLarge(44-47)
2XL(47-50), 3XL(50-52), 4XL(52-54), 5XL(54-56)

T-Shirts, Tank Tops:

Chest sizes in inches:
XSmall (32") Small(35"), Medium(38"), Large(42"), XLarge(46"),
2XL(50"), 3XL(54"), 4XL(58"), 5XL(62").

M-65 Field Jackets:

Chest sizes in inches:
Small(33-37), Medium(37-41), Large(41-45)
XLarge(45-49), 2XL(49-53), 3XL(53-57)

Boonie Hats, Fatigue Caps:

Head sizes in inches:
XSmall(Hat size 6 3/4, Head size 21 1/8"), Small(Hat size 7, Head size 21 7/8"),
Medium(Hat size 7 1/4, Head size 22 5/8"), Large(Hat size 7 1/2, Head size 23 1/2"),
XLarge(Hat size 7 3/4, Head size 24 3/8")

Travel Vests:

Chest sizes in inches:
Small(45"), Medium(48"), Large(51"),
XLarge(54"), 2XL(57"), 3XL(60")

Outback Jackets, Vests:

Chest sizes in inches:
Small(42"), Medium(45"), Large(48"),
XLarge(52"), 2XL(60"), 3XL(64")

N-3B Parkas:

Chest sizes in inches:
Small(45"), Medium(47"), Large(49"),
XLarge(51"), 2XL(53"), 3XL(55")

Vintage Fatigues:

Waist sizes in inches:
XSmall(23-27), Small(27-31), Medium(31-35), Large(35-39),
XLarge(39-43), 2XL(43-47), 3XL(47-51), 4XL(51-55).


Military Type Sweaters:

Chest sizes in inches:
Small(34), Medium(36), Large(38), XL(39),
,2XL(40), 3XL(41), 4XL(42), 5XL(43).