The undress pouchbelt is not strictly undress because it is worn with the full dress when gold kit is not required. It is also worn with the stable jacket (see: Fred Burnaby by Tissot) and with the frock coat. The Blues officers' version of this is distinct from the Life Guards and other ranks in having a white leather slide instead of a gilt or brass one. The buckle differs in that it is a simple straight rectangle instead of a wavy edge type. The tip is similar to the other ranks belt.
