HOW OUR SIZING WORKS
First-time buyer? Measure your favourite non-LABFRESH undershirt (not your body) and compare it to below measurements. When measuring, lay the item on a flat surface, don't measure while wearing it.

#
S
M
L
XL
XXL 
3XL
Chest (1) 42 45 47 49 51 54
Waist (2)
40 42 45 47 49 51,5
Shoulder (3)
38 41 42 44 46 48
Length back (6)
72 73 76 78 79 82
Length front (4) 68 69 71 73 75 77
Sleeve (5)
16 17 17,5 19 20 20