Men's size chart - sizes 44 to 60:

For a good fit you need your body measurements.

Size	44	46	48	50	52	54	56	58	60
Body measurements (in cm)
Body height	169	172	174	177	180	182	184	186	188
A Chest circumference	88	92	96	100	104	108	112	116	120
B Waist circumference	78	82	86	90	94	98	104	110	116
C Hip circumference	90	94	98	102	106	110	115	120	125
D Arm length	61	62	63	64	65	66	67	68	69
E Upper arm circumference	29	30	31	32	33	34	35	36	37

To get the exact body measurements, it is easiest if you have some help from a friend. The measurements are taken directly on the body - in underwear only.