Draught excluder

A draught excluder is used to eliminate cold draught and slow heat loss. It is placed in the bottom crack of doors and windows.
Tubular sand-filled fabric draught excluders are commonly referred to as "door snakes" in Australia. Jenny Agutter told "The Guardian" that the hotel in the Outback where they stayed while making "Walkabout" used them to keep venomous snakes out of the guests' rooms. 