What is Kevlar, and what is it made of? Everyone knows what bulletproof armor is. But do you know how it works? What is so special about Kevlar that lets it stop bullets? | Interesting Engineering

The World's Safest Backpack! The ONLY US Patented backpack with FRONT TO BACK protection. There are hundreds of active shooter events around the world. There is only one you. Put your life back in your hands. ✅ Zipper transforms backpack into a front and back protective bulletproof vest. ✅ Detachable straps transform into tourniquets, drag straps, and/or doorstop. ✅ Anti-Identity theft RFID lined blocking pockets ✅ Hidden name card inside allows for owners identifiers ✅ Drag handle reinforced to