I just received a pair of CG-locks from gofast labs yesterday. (good timing JP, I wanted them for my driving school this weekend!).

First off, if you don't know what a CG-Lock is, here is a quick description. It's a device that attaches to your seat belt clip, and allows the lap portion of the belt to stay as tight as you want it, at all times. This is like a simple version of a racing harness, but in no way does it compare to one.

Installation is quite simple once I understood how they attached to the seat belt. They work fairly easy (just pull up on the shoulder portion of the seat belt to tighten the bottom (as normal, but now it keeps it locked tight).

I've only driven to work thus-far, but I really like this thing. It keeps me planted in the back of the seat (I have a problem in this car with slouching). So now I sit up properly and definitely have more control over the car.

I highly recommend the CG-Lock!