Please, find below the size chart of various items in UK, European and US sizes.
This table should be taken as a guide.

Mens Shirt Sizes

UK/US sizes are measured in inches by measuring the front and back of the chest. The European size only measures the front of the chest and is measured in cm.

Style - Loose Fit
Size UK/US EU
Small 44inches 56cm
Medium 46inches 59cm
Large 48inches 62cm

Mens Jacket Sizes

UK/US sizes are measured in inches by measuring the front and back of the chest. The European size only measures the front of the chest and is measured in cm.

Style - Regular Fit
Size UK/US EU
Small 34inches-36inches 43cm-46cm
Medium 38inches-40inches 48cm-51cm
Large 42inches-44inches 53cm-56cm