D.I.D - 520 MX Chain MX Jerseys It has four densities of

It has four densities of impact foam to absorb and disperse collision forces

Certified as medical device:

CE tested and certified as impact protection: Knee EN1621-1

Hook-and-loop lid attachment provides easy electronics pass-through

Map Pocket Dimensions: 8″ wide x 9″ long

D.I.D - 520 MX Chain MX Jerseys It has four densities of* High performance, lightweight, low friction chains designed exclusively for racing * Pins for ER chains are put through a special patented heat treatment process that produces a 1. 5 times harder surface than conventional carbon heat treating * Provides the highest wear resistance, tensile strength and impact resistance available. * ER chain used by top motocross supercross OEM works teams * Distinctive gold plated finish. * MX series chain