Sockwell Men's Pinwhale Socks 33% Merino Wool, 33% Bamboo Rayon, 29% Nylon, 5% Spandex Made in US Ultra flat toe seam for superior in shoe comfort Spandex throughout the sock prevents slippage and ensures a snappy fit throughout the day Light cushioned sole added for comfort Turn welt top helps keeps the sock in place Y heel shape design for better fit Jacquard knit design for a great new look Spandex throughout the sock prevents slippage and ensures a snappy fit throughout the day Ultra flat toe seam for superior in shoe comfort Y Heel shape design for better fit