Reverse-Flash ring

A ring owned by Eobard Thawne is used in relation to his Reverse-Flash suit. It bears a lightning bolt symbol similar to that sported on the Reverse-Flash's suit.

History
Eobard Thawne first used the ring in order to open a containment pod with the Reverse-Flash suit within it in order to put the tachyon prototype on it.

Thawne later used it again during a fight with The Flash, Al Sah-him and Firestorm in order to release his Reverse-Flash suit, and then ran in to it.

While Eobard was incarcerated in the S.T.A.R. Labs particle accelerator, Cisco Ramon questioned him as to how it worked, but skipped over the question. Thawne was wearing the ring when his ancestor, Eddie Thawne, committed suicide. When Eobard was erased from existence, the ring was as well.

Behind the scenes

 * In the comics, three different Flashes have used a lightning-bolt insignia ring to contain their suit, chemically heated in order to compress it down; these three are Barry Allen, Wally West and Bart Allen.