Smotherrewind.7z

Solid compression concatenates files to maximize the efficiency of the LZMA algorithm. Downsides:

To extract one file, the system must decompress all preceding files, which can be time-consuming for large archives. SmotherRewind.7z

Solid archives often show a lower number of pack streams/folders when inspecting properties in 7-Zip. SmotherRewind.7z