Caraval is a fantasy novel by Stephanie Garber. It is a gorgeous ring wallet set in all black, adorned with black accessories.
 
This set comes with three safety accessories and the standard pom pom:
Personal Alarm with LED light
Kitty Knuckles
Kubotan Stick
Additional add-ons such as seat belt cutter, whistle, hand sanitizer holders and chapstick holders are available online under 'Accessories'.