The size with the back protector is set by the scale on the jacket that you purchase, so be certain to find the right size to make sure whole again safety. 600D (D means denier and signifies the number of And just how tightly woven together the threads are) textile https://women-s-motorcycle-attire79146.fireblogz.com/57711971/the-greatest-guide-to-womens-biker-clothing