Just wondering if anyone has any suggestions on a good pair of sunglasses for an 18 month old?

I have a pair of those baby banz but he hates the band around his head. He actually sits there with mine or DH's Oakleys on no worries, but I want to get him a pair of his own, not to mention the expense if he brakes ours!

Just normal glasses with arms? Oh, and if you can get em bendable it would be tops!