A review for Rectangle stickers by Chrissy Wainwright.
This is the second time we've ordered these stickers. I was impressed by the durability of the first batch -- We had a guy show us the sticker on his wallet after it had been attached for a few months, and it had not faded or worn out.
The only issue we've had is that people don't always realize these are stickers (especially since they are about business card size). It would be nice if the backing was scored along the middle, to make the backing easier to peel off. This would also make it more recognizable as a sticker.