Purchased this backpack Walking Harness since we did not want to go with the conventional harness due to how they looked (long story). So we opted for this one, looks like a backpack and offers the same features.
The item is made of very good quality material, looks nice and as shown in the pictures. As for when using it, it was not 100% fit for purpose. The item is not a substitute for a walking harness, the shoulder pads slip upwards when trying to stop our child (15 months) from swaying and end up with the shoulder buckle kind of starling or pushing on the neck.
Another thing that was not ideal was the location of the Reins lock on the backpack, it is located inwards and not outwards, which seemed bit odd.
My conclusion is that this is just a backpack that you can add reins to it.
I did not return the item since our child liked it and she started putting her thing in and tried it several time.
NB: Ended up buying another proper Clippasafe harness and reins.