Over the years, many improvements have been made in military and police garments to increase safety and create bullet proof body armor that is both comfortable and protective. However, in the past, being safe has meant a certain amount of bulk and discomfort, as well as added weight and mass for soldiers and officers facing combat on the battle fields and in urban wars. The use of Kevlar, a registered trademark of DuPont, has made body armor lighter and easier to work with, but flexibility has still been a problem.

However today a new material called SPECTRA has been released on the market and SPECTRA is more flexible, lighter and stronger than KEVLAR. This new substance is changing the face of bullet proof wear for police and the military, but what are the differences and the big advantages of SPECTRA?

Let's first examine the structure of each of the two materials. Kevlar is a high strength, high performance fiber that, despite its many years of use in bullet proof clothing, is still not entirely understood. The best description of how it is believed to function is that the molecules form into sheets that then stack themselves around the center of a fiber like spokes. The idea behind using this as a bullet proof material was to stack several layers of the material together in a weave pattern.

The woven material catches the bullets and the fibers break apart layer by layer and absorb the velocity. The bullets also get dulled and flattened when trying to penetrate the many different layers of the bullet proof material. This always has been a very effective method but nowadays the bullets are made of harder materials and they have a lot more velocity than in the past.

Kevlar vests are stretched to their limits and beyond by modern day weapons and bullets and from time to time they get penetrated completely by very forceful guns. The only way to solve this problem with Kevlar is to add more layers of Kevlar to the material resulting again in bulky, heavier and less flexible bullet proof vests.

Since Spectra is a completely new and different technology , there is no need for layers due to the fact that Spectra is not a woven fabric. It is about 40% more lighter than Kevlar which makes it very useful for comfortable bullet proof vests