The Live Shield Vest AMID W is Atomic's thinnest and most flexible level 2 back protection vest ever! It's a genuine breakthrough in protection at the highest level: the secret is the material it's made of, called the AMID Body (Atomic Multi-directional Impact Deflector). It is a revolutionary tubular foam system that absorbs energy directly on impact. At the same time, the AMID vest flexes like no other protection in the world and adapts to your movements in all temperatures.