We offer mockup files in two formats: JPG and TIFF.
TIFF mockups contain special layers and smart objects which you can use to apply your design to the item or recolor certain parts. TIFF files are also compatible with all versions of Adobe Photoshop, that's why we prefer it to PSD.
JPG files don't contain any smart layers or functions to edit the object, they are just flat high-quality pictures.
If you are still confused about this, we recommend downloading our Free Mockups and open them in Photoshop to get a full understanding of what you will receive after the purchase.
For more information, please see: I've purchased PSD file on your site but I got a TIFF file. What should I do?