If you are in between 2 sizes, pick the larger size.
If you are still unsure what size you are please do not hesitate to contact us info@stretchedaesthetics.com 
SHIRTS
Size (cm) S M L XL XXL XXXL
Neck 40 41,5 43 44,5 46 47,5
Chest 92-97 97-102 102-107 107-112 112-117 117-122
Waist 83-87 88-92 93-97 98-103 104-109 109-114
Back length 75 76,5 78 79,5 81 82,5