Bullet proof vests are used since ages ago to protect the soldiers from being hit during wars, however many modifications are done to enhance the bullet resistivity of the vests for more protection. Many materials such as abalone, spider-silk, silica nano-particles, Kevlar and Twaron are used in the vests’ production. The characteristics of both Kevlar and Twaron are similar, they both are wetted by a resin to achieve a material that is light and rigid exhibiting astonishing mechanical strength.