To use these socks, simply put them on your child's feet before they head out for skiing or snowboarding. They're perfect for cold-weather activities. As for care, you can machine wash them in cold water with like colors. Avoid using bleach as it can damage the wool. Tumble dry on low to keep them in great shape. Make sure to check the socks regularly for any signs of wear and tear, and replace them if needed. These socks are designed to be comfortable and warm, so enjoy watching your child have fun in the snow!