Material of No Show Socks: Made of 95% polyester,5% spandex.High quality material makes these athletic ankle socks so soft and comfortable to keep your feet dry throughout the day. One Size Fits Most Men: Men’s Shoe Size 6-12 (US)(Sock Size 10-13). Max Cushioning-Max Cushioning place in areas of high impact to reduce sock and foot pain during sports or daily activity. Deep Heel Pocket- Engineered heel pocket to provide true fit during wear. Arch support-Arch support to improve foot arch fatigue and keep sock in place. Reinforced heel and toe-Reinforcement in heel and toe provide durability in high stress areas to dramatically in improve product life. PACK & STYLE: We provide four colors for your selection. Match with any shoes, loafers, oxfords, sneakers and more! They suitable for many scenarios such as home, casual,party, running ,climbing and hiking in spring, autumn and winter. SIMPLE TO CARE FOR: Machine wash cold. Please do not dry clean, do not bleach, do not iron and drying them. Item will shrink if left in the dryer for too long. Best is to air-dry. Socks dry pretty fast.