Files can be saved as a Photoshop (.psd), Illustrator (.ai), layered .pdf (ready for print, high quality), flat .pdf without template on with bleed, or .eps without template visible with bleed. RGB is the color mode we print in and will give you the best color with the printer we use, but we can print in CMYK as well. 150-300 dpi recommended, 72 minimum. Photoshop and Illustrator files will allow us to edit anything if needed. 

File attached below.

We use 2.5 mil white calendared vinyl with permanent adhesive over-laminated with gloss vinyl.