Kevlar, ARMOR, SWAT, Silva, and VESTS are all materials used in the construction of bulletproof VESTS. Kevlar is a synthetic fiber that is lightweight yet strong, making it an ideal material for body ARMOR. ARMOR is a type of metal plating that is often used to protect against bullets. SWAT stands for Special Weapons and Tactics, and is a type of tactical gear used by law enforcement. Silva is a type of fabric that is resistant to punctures and tears, making it a great choice for bulletproof VESTS. VESTS are the outer layer of a bulletproof vest, and are usually made of a combination of materials such as Kevlar, ARMOR, SWAT, and Silva.