I went down hard last week and ended up in the hospital for 3 days peeing blood due to a bruised kidney. I am now looking at trying to prevent a future visit after I can get back on the bike in a month. Dose any one have experience with the Leatt 3dF back protector? They appear to have kidney protection which most of the other compression body armor don't seem to have. If you have other suggestions please bring them, I ride mostly XC with a little AM.