FLEXIBLE SIZE - Our cupcake snuggle socks ladies one size fits most sizes, from UK 4 to UK 8, EU size 37-42. They are flexible enough to fit your feet perfectly. They are super warm, breathable, lightweight, wear-resistant and sweat-wicking. Keep you comfortable all day long. 93% polyester, 5% polyurethane, 2% elastane Modern Care instructions: Hand wash only HEAT PROTECTION - The insulating yarn has excellent moisture-proof breathability and offers high-performance heat insulation and cold resistance. The elastic band at the ankle does not compress the leg, which keeps your feet warm and they are also suitable for long-term work. Gift for women HIGH QUALITY: Thermal yarn provides high performance insulation against cold with excellent moisture breathability. The elastic bands at the ankle do not squeeze your legs, giving you the best and most comfortable wearing experience for everyday activities.