Sockwell Countryman 39% Merino Wool, 39% Bamboo Rayon, 18% Stretch Nylon, 4% Spandex Made in US Flat toe seam True Rib construction for a improved fit Y heel shape for better fit Spandex throughout prevents slippage and ensures a snappy fit throughout the day Socks will be shipped in either Goodhew of Sockwell packaging Flat Toe Seam True Rib Construction for a Improved Fit Y Heel Shape for Better Fit