Keen Kid's Lumi Waterproof Snow Boot (Little Kid)With insulation rated to 40F 40C, the new KEEN Kids Lumi boot takes on the coldest of days in a durably waterproof EVA shell design. This ultralight boot with cold weather traction helps little legs move easily and safely through winter weather. Who knew charcoal bamboo could create something that keeps your feet warm? But it makes KEEN. Warma lightweight insulation that provides warmth where you need it most. FEATURES Secure fit lace capture system