The Bionic Air Back Protector insert is CE certified to the latest back protector standard and  offers the street rider superior levels of comfort and performance in an ergonomic design.   ?  CE Certified Level 1 to the LATEST back protector standard (prEN1621-2:2010) allowing  a slimmer, more ergonomic design.  ?  Slips in to your jacket?s back protector pocket to give you high levels of protection on the  street without hindering riding comfort. ?  Innovative Dual Density Honeycomb Technology (DDH) combines two different  honeycomb structures to offer lightweight impact protection with exceptional breathability  and comfort: ?  Outer Honeycomb plate - Made of Polypropylene; provides an outer structure to protect the  back from penetrating injuries, as well as dissipating impact force over a wider area; ?  Inner Honeycomb foam - Made from a special elastomeric compound, this light and  flexible impact foam absorbs transferred energy.