Canadian-made child safety harness
http://www.childharness.ca/babyharness.html
See website or Youtube for details
-Fits around tummy as well as shoulders with a higher centre of gravity than most of the 'back pack' style leashes
-Saved a couple of face plants for both my toddlers, great for crowds as doesn't have the endless telephone cord length of wrist harnesses and keeps child's hands free so fewer arguments!
- Can have it for free (didn't want to dump it in Value Village)