Men's Clothing

Chest Measure the widest part of your chest. Make sure to keep the tape snug but not too tight, and parallel to the ground.
Neck Using a measuring tape, measure the widest part of your neck just above the collar bone.
Sleeve Using a measuring tape, measure at the base of the center of the back of the neck. Run the measuring tape over your shoulder, let it hang down to your hand and measure to the center of the meaty part of your palm.
Waist Measure around the full circumerence with a measuring tape. Not too snug, but not too loose. Do not measure on top of your clothes.
Size S M L XL 2XL 3XL 4XL
Neck
Inches 14 - 14.5  15 - 15.5 16 - 16.5 17 - 17.5 18 - 18.5  19 - 19.5 20
Centimetres 35.6 - 36.8 38.1 - 39.4 40.6 - 41.9 43.2 - 44.5 45.7 - 47 48.3 - 50 51
Chest
Inches 36 38 - 40 42 - 44 46 - 48 50 - 52 54 - 56 58
Centimetres 91.4 96.5 - 101.6 106.7 - 111.8 116.8 - 121.9 127 - 132.1 137.2 - 142.2 147.3
Waist
Inches 29 - 31 32 - 34 36 - 38 40 - 42 44 - 46 48 - 50 52
Centimetres 73.7 - 78.7 81.3 - 86.4 91.4 - 96.5 101.6 - 106.7 111.8 - 116.8 121.9 - 127 132
Sleeve
Inches 33 - 33.5 34 - 34.5 35 - 35.5 35.5 - 36 36 - 36.5 37 - 38 38
Centimetres 83.8 - 85.1 86.4 - 87.6 89 - 90.2 90.2 - 91.4 91.4 - 92.7 94 - 96.5 96.5