As worn by British army commandoes during WWII, like in the film of the title, a ribbed reinforced sweater with a shoelace neck drawstring. This one has the broad arrow on the label and interestingly is dated 1953.

In the same year Ang Nima, a sherpa on the 1953 Everest Expedition is seen sporting one, in this portrait by Expedition photographer Alfred Gregory. Not new territory perhaps but an insight into the longevity of military pieces in a non-military context.