A thermal-reflective lining and plenty of insulation in Columbia® Little Kids' Bugaboot™ Celsius Boot waterproof-breathable boots keep toes toasty all day. A bungee closure lace system makes it easy to boot up for snow play. Waterproof PU coated Leather and Textile upper Omni-Tech™ waterproof breathable construction Omni-Heat™ reflective lining 400g insulation Bungee closure system Injection molded Rubber shell/outsole Imported Product Features: Upper:Waterproof Polyurethane-coated Leather and Textile Lining:Omni-Heat Reflective™ 210T Taffeta 100% Polyester Outsole:Injection-molded, waterproof Thermal-Rubber shell Insulation:400 g Columbia Boys' & Girls' Little Kids' Bugaboot Celsius Winter Boot