Measurements are in inches with shirt laying flat ( actual shirt measurements )
Small
Body Width 17.5”  ( 44.5cm ) 
Medium
Body Width 19” ( 48cm ) 
Large
Body Width 20.5" ( 52cm ) 
Extra Large
Body Width 22" ( 56cm) 
2X-Large
Body Width 24” ( 61cm ) 

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Recommended size chart

Unisex body
Small
Bust 32-35” (80-89cm) / waist 24-27” (61-68cm)

Medium
Bust 36-38” (90-97cm) / waist 28-30” (69-76cm)

Large
Bust 39-42” (98-106cm) / waist 31-34” (77-86cm)

Extra Large
Bust 43-47” (107-119cm) / waist 35-38” (87-96cm)

2X-Large
Bust 48-50” (120-127cm) / waist 39-42 (97 -106cm)