Both of our level 1 and 2 cups are ballistic capable and can stop baseballs, Hockey pucks, lacrosse balls and some small arms fire. Both have been ballistic lab tested at Chesapeake/NTS ballistic laboratories. The level 1 cup is made from ballistic grade Kevlar, carbon fiber, Urethane comfort surround, aerospace laminating epoxy, and structural epoxy adhesives. The level 2 Nutshellz is made from the same materials, but it has an additional material called Dyneema at its core. It is an ultra-high molecular weight polyethylene, and it is the strongest fabric material on earth and the best light weight material available to stop small arms fire.