I think they are a godsend! Some people will give you comments, but I would much rather have my child harnessed to the pram than out on the road that's for sure. I don't know where you would get the backpack ones from, I just used the wrist strap. With the wrist strap ones, i would often put it through a belt loop on the back of their jeans instead of their wrist as it can annoy them.

Just moving this to Baby and Toddler General Discussion too....