Boys Trench Coats?

I’m looking for a boys (size 14/16) cotton beige trench coat. My price range is anywhere up to $70.00. I’ve checked on Asian sites that run small, however, the quality hasn’t satisfied me. I’ve tried various sites such as ebay, Zara, Whole-sales,and just can’t find what I’m looking for.

It would be great if anyone new where I could buy a good quality trench.

Thanks a lot,