Using these Jimmy's SmartStix Double Pointed Needles is a breeze. Start by choosing the right needle for your project based on the size (US 2 or 2.75mm). The color - coding at one - inch intervals helps you measure your knitting as you go. Just line up the needle with your work and use the markings to check how wide or long your piece is. When it comes to care, keep them away from rough surfaces that could scratch the aluminum. After use, you can simply wipe them with a soft, dry cloth. Don't expose them to extreme heat or moisture as it might damage the material. And always store them in a safe place where they won't get bent or broken.