Daylogic’s emery boards are a cute 4.5 inches long, making them perfect to store in your purse or even your wallet. The boards wear down pretty easily, so generally their lifespan isn’t too long; it’s really dependent on your use, though. The boards are quite flimsy – they can easily be bent and will get ruined if they are in water for too long. However, a brand-new board is quite effective. As the wear increases, the effectiveness will of course diminish. A pack of the boards includes 10 boards with a price of $1.49 – that’s only 15 cents per board! Overall, you get the bang for your buck, which encourages me to continue to use Daylogic’s emery boards.