Pusskin, you say //it does get a little warm after a while, but not enough to worry about it. //
It isnt about how warm it (the laptop) feels, its about the heat being generated by the processor that will overheat and knacker you laptop, you would not be aware of this until it was too late. It has nothing to do with protecting your lap, it needs to be on a hard surface for the heat to dissipate through the vents on the underside of the laptop so the possessor can keep cool.