PERFORMANCE FIT: These wool socks for kids are designed to prevent slipping, bunching, and blisters, ensuring peak hiking comfort. Made ultra-durable and exceedingly comfortable, these cozy, fun socks will always make it into your hiking essentials for kids. MICRO CREW SOCK HEIGHT: These Kids' micro crew socks average 6 in. from heel to cuff - expect them to show about 4 in. above a low hiking shoe or just above a youth hiking boot. Perfect for pairing with hiking boots, hiking shoes, and trail runners, making them an essential part of kids hiking clothing. COMPOSITION: Composed of 53% Merino Wool, 42% Nylon, and 5% Lycra Spandex, these lightweight merino wool socks offer the perfect blend of durability, comfort, and elasticity. Guaranteed for Life - If these socks wear, tear, or develop holes, Darn Tough will replace them. No strings. No conditions. Made in the USA with yarns from America and around the globe - Every pair of socks is knit in Vermont - the perfect testing ground for the finest premium all weather performance socks.