5535 size

Chest  Measure the chest around the fullest part, placing the tape close up under the arms making sure the tape is well up at the at the back over the sholder blades.
Waist   Measure around the natural waistline over any under garments which may be worn.
Sleeve  This is taken from neck center point, along the shoulder line and down the outer sleeve to the cuff edge.
Back Length Measure just under collar seam to the bottom of the garment.
5535 REG   M L XL 2XL
CHEST   48.5 52.5 56.5 60.5
WAIST    46.5 50.5 54.5 59.5
BACK LENGTH   33.5 34 34.5 35
SLEEVE LENGTH CENTER BACK   35 36 37 37.5
           
5535 TALL   LT XLT 2XLT 3XLT
CHEST   52.5 56.5 60.5 64.5
WAIST    50.5 54.5 59.5 63.5
BACK LENGTH   36 36.5 37 38
SLEEVE LENGTH CENTER BACK   37.5 38.25 39.25 39.75
           
5535 BIG   3XLB 4XLB 5XLB 6XLB
CHEST   64.5 68.5 72.5 76.5
WAIST    63.5 66.5 70 74.5
BACK LENGTH   37 37.5 38.25 39.5
SLEEVE LENGTH CENTER BACK   39.75 41 42.25 43.5