These "fat" bison tubes are an all new size. They are still about the same length as a standard bison tube but these are fatter than a normal bison tube. They measure just shy of 3/4" wide making them much easier to put a log sheet in.
Each container comes with a Rite in the Rain® log sheet.
Recommended replacement Rite in the Rain® log sheets:
1" x 11" 8 Pack
https://spacecoastgeostore.com/products/rite-in-the-rain-log-sheets?variant=19488898842742