Boots should be no more than three years old, must have a DIN number (see ‘Safety Alert’), and should be fit by a specialist in fitting children’s boots. Boots need to be flexible (the uppers) - not too stiff, especially for the lightweight or beginning skier. Two buckles for the smaller sizes and usually three for the larger sizes. Single buckle boots, with the exception of very small boots, don’t offer the alternatives in fitting and comfort or walking that multiple buckle boots do. It is very difficult to walk with your top buckle undone when you have only one buckle. On the other hand, too many buckles can contribute to stiffness. A child’s boot should have a little “grow room” that can be absorbed by a heavy thermal sock for a secure fit. How much is determined by how early in the season the boot is fit and how rapidly the child’s feet are growing. There shouldn’t be so much room that good firm contact between foot and boot is sacrificed as that is the main connection between skier & ski and thus the primary locus of control. If you are considering purchasing used equipment: