In most cases unless otherwise specified, jerseys are standard sizing. Please refer to the size chart or even check an existing shirt you own for your correct size.  Please note the exception to this is authentic versions which are a slim fit. Please see the product description for further details on selecting the right size in authentic version jerseys. If in doubt, please feel free to contact us at enquiries@italiansportswearcollection.com or through our live chat and we can assist you in choosing the right size.