Paracord Knife | Doppler Phase 4 was added to the game on March 31, 2025, in the Spring Forward update and became one of the rare special items in the Fever Case. The skin was created by Valve. The Paracord Knife appeared in the game in 2019 as part of Operation Shattered Web and first received Chroma finishes in the Fever Case.
The blade is coated with metallic paint and decorated with a pattern of translucent wavy lines resembling clouds of smoke. The color scheme includes blue, dark blue, and black shades, forming smooth gradient transitions. The handle is wrapped in gray paracord.
The skin's Float Value ranges from 0.00 to 0.08, which makes Paracord Knife | Doppler Phase 4 available only in Factory New and Minimal Wear conditions. As the Float Value grows, small abrasions appear on the spine, but they remain almost unnoticeable even at the highest wear levels.
The pattern index affects the placement of the texture and colored areas on the blade surface. The gaming community highlights Max Blue variants with blue dominating the play side of the blade. Some of the Tier 1 patterns are #0, #3, #62, #98, and #138. Fake Max Blue variants are also highlighted. They look similar to Tier 1 Max Blue variants but feature a dark area at the blade tip. Typical examples include patterns #9, #27, #60, #71, and #110.
The quality of Paracord Knife | Doppler Phase 4 is Covert. The skin is available in a StatTrak version. The skin is part of the Doppler series. Minimal Wear versions are less common than Factory New ones and may cost more. Their higher price comes from the rarity of the condition, not from a better appearance.