Case for Kindle Paperwhite, it is a protector that helps to cover Kindle Paperwhite if you print it with TPU it looks greatParameters:layer height: 0.2walls: 4Top and bottom layer: 4Speed: 35Material: TPU preferably, but it can also be printed in pla, I liked it better in PLAIn the back, those holes were left for a better grip and so that the Kindle does not get hot