Besides being appropriate for a heraldry society, it is particularly suitable for a Cambridge University society since its pattern brings to mind the ermine (i.e. black ermine spots on white) cross of the university's coat of arms and also, as a fur, the fur used for the hoods of bachelors.
The tie was designed in 1958 by the then Junior Treasurer, Dr J. Bell of Magdalene College.
At present it is available both as a long tie and as a bow tie (as shown in the photograph).
Ties can be bought at Society meetings or by contacting one of the Society's officers.