HIGH QUALITY MATERIAL: 80% cotton (toe part of the sock), 16% spandex (for elasticity, making it fit most feet) and 4% nylon (to ensure all parts of the sock – toe, ankle and others – fit correctly). BREATHABLE, which prevents foot diseases. Made of high-quality cotton, flexible enough to breathe freely day and night, covering the top and sole of the foot. High-quality cotton absorbs sweat and prevents smelly feet. Y-shape for heel and ankle: The heel part of the sock is independently sewn, and the sock is sealed with a Y-shape to better fit the heel and ankle. A snug and professional fit is best. The role of five-finger socks: The five toes can move independently, which prevents viruses from infecting the feet. Each toe has its own position. A long and straight shape, the shape of a beautiful toe. The package contains 6 pairs of socks. There are 6 different colors: blue, white, pink, black, gray and purple. The socks are flexible and fit feet in the UK: 4-8, and EU: 39-44, making them suitable for most people. Machine wash or hand wash, whatever suits you.