Vector format! There is no size limit. If you need really big ones, you are equipped with AI, EPS files versions as well. The file can be edited in Adobe Illustrator CC2014 or higher.
What will you get:
1 Vector (EPS+AI) format files (so easy to customize colors, resize and rotate them, then apply easy to any size area).
Writing Text Effect, Graphic Style - 196283654
AI EPS | 6 Mb