Dragon Scales For Kids

My four year old boy seems to get himself into a lot of scrapes.  The traditional knee/elbow pads seem only to cover a portion of his body.  What he needs is a coat with carbon fiber scales on it.  Basically kid body armor it would protect from scraped elbows, arms, back and front (yes all of those he's scraped recently).  The coat could be light weight and flexible using overlapping scales and it would offer military grade protection for kids.  It would be handy for new bike riders, new motorcycle riders, new skiers, etc.