How we size our products:
A Chest size: Run the tape measure directly under the armpits, horizontally across the widest part of the chest, and read the chest size.
B Waist size: Run the tape measure around your middle like a belt (as a rule, for women the narrowest part, for men just below the navel), and read the waist size.
C Inside leg: Measure from the crotch to the floor, down the inside of the leg.

 

 

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UNISEX SIZES IN INCHES   
Chest sizeWaist sizeInside legOrdering size
32½ - 34½27½ - 29½31 - 32XS
34½ - 37½30 - 32½32 - 33S
38 - 4033 - 3532½ - 33½M
40 - 4235½ - 37½ 33½ - 34½L
42½ - 44½38 - 4034 - 35XL
45 - 4740 - 4234½ - 35XXL
47 - 5342½ - 4834 - 35XXXL
53 - 58½48½ - 56½34 - 354XL
    
Size overview:   
    
Women's sizes   
Chest sizeWaist sizeInside legOrdering size
30½ - 3225 - 26½31 - 3234
32½ - 33½27 - 2831½ - 32½36
34 - 3528½ - 29½32 - 32½38
35½ - 36½30 - 3132½ - 3340
37 - 3831½ - 32½32½ - 33½42
38½ - 4033 - 34½32½ - 33½44
40 - 41½34½ - 3632½ - 33½46
41½ - 4336 - 37½32½ - 33½48
43½ - 44½38 - 3932½ - 33½50
45 - 4639½ - 40½32½ - 33½52
    
Women's special sizes   
Chest sizeWaist sizeInside legOrdering size
34 - 35
28½ - 29½28½ - 29½19
35½ - 36½30 - 3129 - 3020
37 - 3831½ - 32½29½ - 30½21
38½ - 4033 - 34½30 - 30½22
40 - 41½34½ - 3634½ - 3623
41½ - 4336 - 37½36 - 37½24
34 - 3528½ - 29½28½ - 29½76
35½ - 36½30 - 3130 - 3180
37 - 3831½ - 32½31½ - 32½84
38½ - 4033 - 34½33 - 34½88
    
Men's sizes   
Chest sizeWaist sizeInside legOrdering size
35½ - 36½30½ - 3232 - 3346
37 - 3832½ - 33½32½ - 33½48
38½ - 4034 - 3532½ - 33½50
40 - 41½35½ - 36½33 - 3452
41½ - 4337 - 3833½ - 34½54
43½ - 44½38½ - 4034 - 3556
45 - 4640 - 41½34½ - 3558
46½ - 48½41½ - 44½34½ - 3560
49 - 5145 - 47½34½ - 3562
51 - 5348 - 5134½ - 3564
53½ - 55½51 - 5434½ - 3566
56 - 5854½ - 5734½ - 3568
    
Men's special sizes   
Chest sizeWaist sizeInside legOrdering size
37 - 38
38½ - 40
40 - 41½
41½ - 43
43½ - 44½
45 - 46
46½ - 48½
49 - 51
35½ - 36½
37 - 38
38½ - 40
40 - 41½
41½ - 43
43½ - 44½
45 - 46
34 - 35
35½ - 36½
37 - 38
38½ - 40
40 - 41½
41½ - 43
43½ - 46
46½ - 49
32 - 33
33½ - 34½
35 - 36
36½ - 38
38 - 39½
40 - 41
41½ - 44
30½ - 31½
31 - 32
31½ - 32½
32 - 33
32½ - 33½
32½ - 33½
33 - 34
33 - 34
35 - 36
35½ - 36½
36 - 37
36 - 37
36½ - 37½
37 - 38
37½ - 38½
24
25
26
27
28
29
30
31
94
98
102
106
110
114
118
    
    
    
Cm sizes   
To convert measurements in cm to inches, divide by 2.54, then refer to the table above.
Example for measurement 84 cm:
84 ÷ 2.54 = 33 inches