I am looking for a child lead that is longer than 1.5m. My son is getting bigger and I want him to be able to explore the world when we are out and about but I do not have to be on top of him all the time. I do however need to be able to stop him from wandering too far (I have two children and it starts getting dangerous when I have to chase after one at the expense of the other). I wondered if anyone knew of any products available. All the child leads I have seen are too short for my purposes.