The answer is tricky.

Ski boots should fit snugly and feel tight, but not to the point of causing discomfort or pain. A properly fitting ski boot should be snug around the heel and ankle, with enough room in the toe box to wiggle your toes. The boot should also provide support for the arch of your foot and should not feel loose or unstable when you are standing or moving. It's important to try on different sizes and brands of ski boots to find the right fit for your foot. It's also a good idea to have a professional boot fitter help you choose the right size and fit for your boots.