From Etsy user MadBoyWithBox:

This is an entirely hand-made bag shaped like a 1960’s British police box. It is made of a royal blue vinyl fabric and lined with a silvery-grey fabric. It’s larger than my other bags to allow for more capacity, measuring 7 inches by 11 inches in size.

It has two clip-on backpack straps, with attachments on the side so that it can also be used as a handbag.

[Source: MadBoyWithBox on Etsy | Via GA]