I ended getting 2 jackets for myself and one for the better half during the closeout sale. These jackets (at least mine) come with good quality knox shoulder and elbow armor but nothing for the back but all of my jackets have a place to install back protectors. I have been wearing sport bike jackets since I started riding street bikes 9 years ago and they have all had back protectors and I kind of like them being there. I measured the opening the best I could and found that the Joe Rocket Dual Density protectors seemed like a close match. I ordered one for me and one for my wifes jacket (mens protector is larger) and sure enough both fit perfectly! So if you think you might want a back protector you can pick up the Joe Rocket one for $20 or so with shipping.