Hello! R is the abbreviation of Rtrademark, which means registered trademark when used in trademarks. The circle R indicates "registered trademark", which means that the trademark has been applied for registration at the National Trademark Office and has been reviewed and approved by the Trademark Office to become a registered trademark. All registered trademarks of men's clothing brands have the word R, such as Boston, Heilan House, Ermenegildo Zegna, Playboy, etc. Thanks for reading!