Hello loves. I'm thinking of purchasing the RST "Propelle Jacket" + trousers ([URL]http://www.demon-tweeks.co.uk/resources/images/zoom/RST450.jpg[/URL] black or red?) and I've noticed that the Jacket has CE approved armour for elbows and shoulders, but I notice there is no mention of any kind of spinal protection. On the grounds that even my cheapo jacket I'm currently wearing (I'm aiming to get a high concentration of dead wildlife on it before it gets washed) has upper spinal armour, I think it's probably a good idea to have some king of back protector on this jacket. I have a 49" chest, and the jacket comes in at a maximum of 54". How much space should I allow for back protection? I'll probably only wear it on longer rides/going out to play/shit weather.