Inside the Factory: Season 5, Episode 4

5 - 4: Mattresses

Gregg Wallace visits a mattress factory in Leeds, where he discovers how steel is stretched and coiled into springs and the advantages of natural fibres like hemp and wool. Cherry Healey talks to a sleep scientist about the benefits to reaction time from taking an afternoon nap, and Ruth Goodman tries out a Middle Ages mattress made out of a straw-stuffed sack.