Atomic Live Shield Vest AMID W is the thinnest and most flexible level 2 back protector vest ever! It’s a genuine breakthrough in top-level protection: the secret is the material it’s made from called AMID Body (Atomic Multi-directional Impact Deflector). It’s a revolutionary tubular foam system that absorbs energy right at impact. At the same time the AMID Vest flexes like no other protector in the world, adapting to your movement in any temperature. It comes with a women’s-specific Ergonomic Slim Fit and is so light and breathable it feels like wearing a base layer. It also features a waist belt that’s height-adjustable to fit different torso lengths for a great individual fit and removable for wearing under a race suit.