We currently don't offer frames for sale on there own (this is being added soon however) they would need to be added when the original order for the print is made using the frame selector option.
As our sizes are very internationally friendly you'll be able to find frames you can use almost anywhere. We recommend places like IKEA and Amazon, but a quick google will yield you many results.
The print sizes we offer are: 30x40cm, 40x50cm, 50x70cm and you would pick the frame size accordingly.