This charcoal knee-high school sock with built-in elastic straps from Silly Silas delivers a secure, stay-up fit ideal for school uniforms and everyday wear. Soft, ribbed knit provides gentle stretch and breathable comfort while durable construction helps resist wear during active play. Built-in straps keep the socks neatly in place without constant adjusting, making this style perfect for formal outfits, playground fun, or daily routines. Machine-washable care and a neutral charcoal shade offer easy maintenance and versatile styling for children's legwear and school stockings.