system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are the helmet-straps that the British military use in formal dress placed under the lip instead of under the chin?
gpt
The dress bearskin hats have a chain strap so when not firmly affixed will hang naturally around the lip area, however the chain will allow the chain to go under the chin when needed to keep the hat firmly on.