The kit comes with the perforated silicon case, a needle, patterns, and all the thread you'll need.
The finished product is very cute but unfortunately the silicon case is quite floppy and the thread caused it to warp somewhat - so it doesn't actually stay on your phone. I suggest if you want more than just the experience of cross stitching you should try and find a harder plastic cover perforated in the same way. Definitely looking forward to some more projects with cross stitch!