I'm looking for the most lightweight buggy possible that has a shoulder strap. My 19 mth old wants to walk to school every day to collect her ssisters but I need a pram to sit her in for the return journey which she won't manage. Does anybody know of a stroller that I can easily sling over my shoulder to keep both hands free to keep my toddler on the straight and narrow. The route is less than a mile but it still needs to be very very lightweight. Any advice? I was looking at the maclaren volo - it's something like 4.8kg?