Yes! This is obviously the most effective solution to America's spate of High School shootings. Parents can now sleep safe in the knowledge that the next time a crazed gunman enters their kid's school their child will be lying on the floor, safely wrapped in a fluorescent blanket.
Obviously much more sensible than controlling access to lethal weapons in the first place.... Obviously.
According to the makers, the students can put the blankets on their back and line-up in the hallway to "develop a shield like the Romans and Greeks used to lock together".