Related Clues:

• Covering near where people live around Gateshead
• The late shift
• It provides retirement cover
• Habit picked up by retired people
• Shift of retirement is almost secure
• Almost secure cover for one who's retired?
• It's unlikely to get worn out
• Light sleeping gown
• Clothing worn in bed
• Bed clothing
• In the sack dress?
• Nightwear ... or a hidden feature of 17-, 21-, 33-, 41-, 54- and 59-Across?
• Sleeper's clothes
• Close to end of condiment that is something put on kipper?
• Some silk threads