Nagajuban (under-kimono slip)

This is a juban (under-kimono) with auspicious patterns of shrimp and sea bream. It is unused with original tags, but due to long-term storage, it is listed as near unused.
A black han-eri (half-collar) is attached.
The material is unknown.
The color is likely dove grey.
Size:
Length (from shoulder): 140cm
Sleeve to sleeve length: 69cm
Sleeve length: 48cm
Please excuse any errors as these are amateur measurements.