This soft pouch is ideal for many interchangeable lenses for rangefinder and SLR cameras. Its size is approximately 2.5x2.5x3.5" (62x62x87mm).
I tried it with several common 50mm lenses - Jupiter-8, Jupiter-3, Industar-22, Industar-50 (rigid or collapsible), Industar-61, Leitz Summitar, CZJ Sonnar, and others.
It was quite challenging to source a pouch of this size. Most of the soft pouches on the market are much larger and not practical for smaller lenses.
Made of soft synthetic leather (vinyl), with drawstring closure.