WITH INSULATION RATED TO -40°F/-40°C, THE NEW KEEN KIDS LUMI BOOT HAS A WATERPROOF EVA SHELL DESIGN. THIS ULTRALIGHT BOOT WITH COLD-WEATHER TRACTION HELPS LITTLE KID LEGS MOVE EASIER THROUGH WINTER WEATHER.FEATURESSecure-fit lace-capture systemPadded tongue and collar for comfortAdjustable hook-and-loop strapRemovable felt liner with KEEN.WARM insulation rated to -40°C/-40°FKEEN.FREEZE winter rubber compoundMATERIALWaterproof lightweight injected EVA shell and textile upperNon-marking rubber outsole leaves no trace