Fabric is 100% Cotton. Size 36 corresponds to 'XS', size 38 to 'S', size 40 to 'M', size 42 to 'L', size 44 to 'XL'. Size of the Product in the Image: 38 (S) SIZE Measurements: Chest: 53 cm Shoulder to Shoulder: 41 cm Sleeve Length: 61 cm There is a 2 cm increase between sizes.