a flat silhouette icons of unique shield.

silhouette decorative futuristic protection collection monochrome emblematic including shieldset showcase medieval tactical heraldic bucklers security template abstract isolated heraldry editable shields details classic cartoon diagram drawing signage defense graphic outline minimal vintage lineart uniform vector unique shield shapes styles modern ornate energy circle number symbol emblem design safety knight strong simple icons round print brand label wheel organ badge guard armor crest shape decor flat kite