Using these Jimmy's SmartStix Double Pointed Needles is a breeze. Just start knitting your project as you normally would. The color-coded markings at one-inch intervals make it easy to measure your work at any time. You can measure the length of your knitting or check your gauge right on the needles. When you're done knitting, simply store the needles in a dry place. Avoid dropping them on hard surfaces as this could damage the aluminum. To clean, you can use a soft cloth to wipe them down. With proper care, these needles will last you a long time and keep helping you create amazing knitting projects.