No I would not invest in this venture. This t-shirt is no more than a gimmick. For people that actually knows how AR work, you don’t really need to include the T-shirt. Yes they did mentioned that the app is free and is available on all mobile devices but the t-shirt is quite overpriced. At $29 per shirt on Amazon, I don’t think most kids would want one. Most of these generic event t-shirts are usually sold at less than $10 if not free. I don’t see how kids would be interested in wearing one of these while having their peers look. In fact, it could possibly work with any other normal t-shirt.
The video in general is lacking a business aspect. They failed to include if there are competitions out there, how much they have sold already, if the market is international, and so much more details.