the magnetbra is magnetic.. so it does not move once its put on (at least it moves very very minimally)

www.magnetbra.com.. i dont think the VX shows up on his website, you have to e-mail him about it, but many members have used them, very few have had issues, i think one member had her paint kind of scuffed from it, another had issues with lots of bubbles in the bra itself (think that was replaced for free though)

basically if you order the magnet bra just make sure to take your time when you install it.. wash the area very well first, use a good quality wax liberally to protect the paint under it, and remove it every month or so to clean and re-apply wax under it, once the bra has been on for a week or two its much easier to install again

I can vouch for the effectiveness of the bra



EDIT

just checked his site again.. looks likes hes updated.. has the VX listed under the bra models.. he has a photo of the sexiest VX posing in a bra on his site