I got mine at Target as well for about $30.

They have three panels - white black denim so they can go with most pants. They also have three different sizes in the pack which I suppose are supposed to correspond with the 3 trimesters.

Personally I didn't use mine all the much after I got too big for the smallest belt. My pants just seemed to bulge where the panel was & it did'nt look very nice at all, but for the first part it was a godsend.

Just remember too that you will have to have longer tops on with the belts - your zipper is undone with them & although there's a panel to cover the gap you won't want it showing.