Good Luck Socks: This koi fish symbolizes good luck, abundance, and perseverance. Don't be surprised if luck comes your way while wearing these. Details Materials and Care * 85% Combed Cotton * 10% Anti Microbial Elastane * 5% Nylon * Cushioning- Medium for a snug and secure fit all around. * Machine wash warm.Do not Iron. Air Dry. * Moisture Wicking * Anti-Microbial Fibers * Padded Footbed * Arch Support * Seamless Toe * Y-Stitched Heel Y-Stitched Heel We Stitched a "Y" shape in the sock heel, creating structure that perfectly contours to your heel. Anti-Microbial Premium blend of naturally breathable combed cotton, mixed with nano-silver to eliminate odor-causing bacteria, and wick moisture to keep feet dry. Never Slip Cuff We tested over and over to find the perfect cuff fit. Not too firm and not too loose, exactly where it needs to be to stay snug through the day. WHERE COMFORT MEETS STYLE GUARANTEED OR GET YOUR MONEY BACK