Size matters, no matter what you're picking out. Getting the right-sized gloves can keep you comfortable while you're welding. Measure your dominant hand using a tape measure on a soft cloth; you'll get the most accurate measurement this way. For numbered-sized gloves, just match your measured inch into the numbered size given. For example, if your measurement is six inches, you need to look for a size six pair of gloves. If you're still confused, don't be. Some brands offer you a size chart so that you can find your size right away!