This reinforcement of silicone called Deflection

This reinforcement of silicone called Deflection is hard to contact and smooth the rest of the time, giving it an important feature to be used as a defense against the blows, and is the work of Dow Corning. Although this armor is made of silicone, is polymerized in sheets of flexible silicone with a distinctive and very unique molecular structure.

• http://thechemistrysideoftheforce.blogspot.com/

To explain it in some way, the molecules move freely within the silicon, but as soon as it hits, the molecules together to form a solid state.

Unlike bulky body armor, deflection is flexible, breathable, washable, and can sew, so you probably already have been incorporated into everything from jackets to shoes.

Vía | Dvice