We guarantee these are 100% :

Material: 50%cotton blend+50%ployester

Colour: grey

Size: please refer to the size chart (CM)

Asian Size	Shoulder	Chest	Sleeve	Length
M	42cm	100cm	61cm	67cm
L	43cm	104cm	62cm	68cm
XL	44cm	108cm	63cm	69cm
XXL XXXL	45cm 56cm	112cm 116cm	64cm 65cm	70cm 71cm

Please compare ours size to your true size before purchase,1CM=0.39INCH