The Klean Kanteen Loop bottle surpasses all other aluminium and plastic alternatives. It has a large opening which means that it is easy to empty and fill. Its small size and rounded corners also means that it is easy to keep clean.
It is durable bottle, so it won't matter too much if your child is heavy handed with it, and this bottle doesn't alter the flavour of anything stored inside it.
There is nothing that is unsafe to the child in the product, and if for any reason you're unsatisfied with it, it comes with a lifetime warranty.