15% spandex HIGH QUALITY WINTER WOOL SOCKS: Thick Wool socks are made from 50.4% Polyester, 17% Wool,15% Nylon,15% Acrylic,2.6% spandex, Super thick, Soft and Comfortable fit Autumn or Winter! These socks will keep little toes warm for children FLEXIBILITY & COMFORT: These children socks are premium quality wool knitted, touch soft, breathe freely, absorb sweat, odor resistant, keep warm in Spring, fall, winter season or in any cold weather areas. SEAMLESS & COZY: These boys seamless socks feauring boneless sewing toes and reinforced heel for extended wear.Cushioned heel built-in arch support,creates a more comfortable fit on the foot. GOOD GIFT IDEA: This great value pack of 6 wool socks for kids are in random colors. Perfect for everyday wear, you can wear them as office, school, hiking, outdoor, sport, home, work, christmas socks. NON-FADE COLORS GUARANTEE: Machine wash available! Recommend hand wash to maintain the durability of wool socks.