I've always hated the look and idea of reins but as my son really will charge off and won't hold my hand, I felt I had no option if we were to ever enjoy a walk together. This daysack is perfect and has made us both much happier (and so much less frustrated!!).
The bag has a reasonable capacity when you consider that a small child has to carry it. I can fit in a nappy, some wipes, a snack & his sippy cup - perfect for a walk (and I normally only ever need his water anyway). I was so surprised with just how far he could walk once I actually let him - just remember they have to get back too!
The only reason that I have given it 4 stars is because the chest strap is not adjustable. In this cold weather my son's thick coat makes it a little tricky clicking it together which is fine now, but I do wonder how it will be next winter once he's grown.
All in all an excellent buy - I'm so glad we have it!