The soft and comfortable merino wool, in the SmartWool Kid's Merino Wool Hike Socks will keep kids warm in winter, cool in the summer. All the features of the adult's version are found in this great hiker for kids! Soft and comfortable merino wool terry loop cushioning throughout. Keeps kids warm in the winter and cool in the summer. 3x1 rip top with Lycra keeps socks up and in place. Light density padding for ultra soft, comfortable fit. Arch brace knit with Lycra for increased support and comfort.