St Thomas comes as a complete kit which includes 14-count black Aida cloth, color-fast stranded cotton threads, needle, chart, instructions, and information about the saint.
St Thomas is the first in a series of cross-stitch saints. All of the saints are approximately 5.5" by 7.5", and I have mounted mine in mats or frames with a 7" by 9" aperture. It will be easy for you to find the right mat or frame in a standard size.
If you would like a St Thomas kit, he will be available soon in my Etsy shop. Also coming soon: St Margaret of Scotland and St Columba.