I have a Motorola moto g (4.5 "screen). In original accessories Motorola offers shells (pretty but does not protect the smartphone) or folio shells (protects but I do not like the idea of opening such "book"). In search of a sock I came across this article and frankly there is nothing wrong! The quality is surprisingly good for the price.
I put my 4.5 "in it but this is the maximum I think we can put on, so if you have a 5", careful ...