Sporty and comfortable, the Kamik Luxe snow boot is thoughtfully crafted of vegan-friendly, waterproof 1200 denier nylon upper for sustainability. Also, it's insulated to protect those little feet and offers toasty warmth on the coldest winter days (right down to -40 degrees Celsius). This lace-up boot has lightweight RubberHe bottoms that safeguards against rain, puddles and splashes and lends traction on wet or slippery surfaces. Not sure which size to order? Click here to check out our Kids’ Measuring Guide! For more helpful tips and sizing FAQs, click here .