Achievement unlocked! I made thermal activated color changing tees! I had wanted
to do this for a long while and am happy to be the first to try this out. The process is similar to Hypercolor tees (big ups to Generra :) with some modern improvements. We ran about 125 shirts in a variety sizes and I'll just see what the response is and take it from there for future designs. These shirts run a little smaller than usual.
My recommendation is to wash in cold (no bleach), hang to dry if possible or tumble dry on low heat.