Fit is settled above. This is who each one suits once fit is no longer the question.
Skull & Co. GripCase SD for Steam DeckMost owners of this device end up needing one. The only one on this page recording Material — Soft protective polymer.
Fit rarely carries across generations, so this lists only the exact models each product is separately documented to fit.
None of these cases is documented to fit any other model we cover. Treat each one as specific to Steam Deck OLED.
Common wrong buys
What looks like it fits Steam Deck OLED but does not
A screen protector cut for the LCD Steam Deck is the most common wrong buy: it leaves an uncovered strip around the larger OLED panel. Skins cut for the LCD model can also misalign around the display opening.
Coming from an older model
Why a previous-generation case may fail here
The OLED revision keeps the LCD Steam Deck's external chassis dimensions but fits a larger 7.4-inch OLED panel in place of the 7-inch LCD, so the display reaches closer to the bezel edge.
Cases, docks, and grips built for the LCD Steam Deck fit this revision, because the outside of the console did not change. Screen protectors are the exception.