black whistle sketchy watercolour drawing.

accessory alarm art authority background ball black blower blowing bold calling camping children class classic close coach concepts country cross culture cute defense doodle drawing drawn emergency equipment fans football fun game gear goal graphic gym hand icon illustration instructor isolated kit law lifeguard loud match object personal physical pictogram plastic police power racing ref referee rescue safety school self selfdefense shape signal sketch sketchy small soccer sound sport survival teacher team toy training volleyball watercolor watercolour whistle whistleblower white