For the suit of her Earth Two equivalent, see Killer Frost suit (Earth Two).
"Caitlin's taste in clothes is just as bad as her taste in men."
Killer Frost complaining to Felicity Smoak and Iris West on Caitlin Snow for not having a suit[src]

The Killer Frost suit is a protective suit worn by Caitlin Snow of Earth One as Killer Frost.


Caitlin wears a protective suit as her evil alter-ego, Killer Frost, shortly after she was recruited by Savitar.[1]

The second suit was first seen in the speed Force when Barry Allen went back in time. [2]

The first suit was first seen in a possible future, through Cisco Ramon's vibe, where Caitlin, having become known as Killer Frost, took on Vibe.[3]

This suit is similar to the suit worn by the Caitlin Snow of Earth Two, in terms of the design and the colors.

The suit includes a long dark blue coat with silver details, which reaches down to a little bit below knee length. The coat is zipped up to form a corset-like top with a snowflake-like symbol in the middle of her waist, possibly featured as an "emblem" for the suit. It also has a dark blue dress underneath the coat and long dark blue boots that go up to her thighs.[citation needed]Caitlin eventually merged with her Killer Frost side and abandoned her alter-ego and her suit. [4] Killer Frost, then, started using a new suit in result of the other one getting destroyed. This new suit includes a baby blue jacket and a leather pants with the former snowflake-like symbol from her old suit. She also wears black heels.

Known users


The Flash


Season 3


Season 6

DC's Legends of Tomorrow

Season 3

The Chronicles of Cisco


  1. "I Know Who You Are"
  2. "Fast Enough"
  3. "Shade"
  4. "Finish Line"