Also claimed to work with the Travelwide, while the non-”i" model does not.
My understanding re New55 is that the "i" model is either not preferred or not recommended. Perhaps someone else can give a more definitive statement.
"New55 FILM is designed to work only with the famous Polaroid 545 Land Film Holder. Otherwise called the "545," this holder is a substantial metal construction with a silver processing lever. Many thousands of these holders were made in the heyday of instant film and remain in circulation in good working order. The 545i is the lighter-weight plastic version that also works for New55 FILM."
"Do not use the very old 500 holder from Polaroid. New55 FILM will be designed to fit the metal 545 holder, which I prefer due to its ruggedness, and the plastic 545i."