Originally Posted by StumpyPete

yes, i have it on mine. Link to realoem is here:

RealOEM.com BMW E70 X5 3.0si NETTED BLIND F SIGHT PROTECTION

however if you look at the detail it says it is not allowed to be fitted in USA for some reason!

The other thing to look out for is that I believe the cars without the option do not come with the sockets in the headlining to accept the net.

there is another option:
RealOEM.com BMW E70 X5 3.0si Gepäckraumtrennnetz 1. Sitzreihe

But that looks as it fits between the front and rear seats, no idea if that would meet your requirements.