Hero Arts Clear Stamps - A Little Note Highest quality, clear photo-polymer stamps. Self cling for easy use. £12.99 £3.90 A charming and all-purpose tag set for gifts, placecards, cardmaking, invitations and more. Hero Arts 4x6" PolyClear sets are made from genuine photo-polymer for true impressions every time. They stamp like rubber and are easy to use, easy to clean, always cling and are non-toxic.