A boot with all the advantages and benefits the youngest skiers need: XJ Sprint. Construction and materials are an ideal balance of practicality, comfort, and basic performance. The boot has extra insulation to keep kids comfortable as they learn. The Internal Molded Heel Cap will hold the foot in place and eliminate any side to side movement without making the boots uncomfortable. The Triple-F Membrane is the perfect material for that. Additionally, the Comfort Guard Insulation is the best way to mitigate complaints about the cold and wet conditions that inevitably intrude upon little feet. The soft flexing of the sole is great for learning how to kick, as the flex is more natural and closely mirrors a shoe or sneaker. With the good looks of the adult versions of the boot, and matching perfectly to their junior skis, it's no wonder this is the best-selling junior boot that Fischer makes.