The Wave G Back Protector is a great way to upgrade your Dainese jacket to an even higher level of safety. Protection Inner core is comprised of Nidaplast (R) extruded polypropylene for outstanding protection External anti-shock perforated corrugated structure permits ventilation Certifications EN 1621-2/2003 Standard Level 1 Specifications Choose G1 for Women's Jackets Choose G2 for Men's Jackets
I'm very new to motorcycle gear and what not. in the video review it's said that this is a "one time use" back protector, I was wondering what that means exactly?