Radio 4 in Four - What's our obsession with trainers? - ÃÛÑ¿´«Ã½ Sounds

Radio 4 in Four - What's our obsession with trainers? - ÃÛÑ¿´«Ã½ Sounds
What's our obsession with trainers?
How did this type of shoe turn in to a global fashion item worth tens of billions?