I don't wear insert back protectors simply because different brands have different pocket shapes, so having the harness back protector means I only need one of them - instead of having to buy one for every different brand jacket I own (which is like three of them now... $$$)
But yeah, try the forcefield l2. It molds to your back with body heat and is way way thinner than everything else. It's not any less safe, either - it's actually the safest brand on the market. Basically acts like a non-newtonian fluid, in solid form. <5.8N of transferred force in an impact (everything else is 7 or 8ish). SCIENCE, BIATCHES!!!
Man, forcefield really needs to start paying me advertising money or something.
__________________________________________________
|