SIZE:10-13 Sock size, will fit women's shoe sizes 6-12（US）. MATERIALS : 97% Stretch Nylon and 3% Spandex NEW STAY-UP TECHNOLOGY: Knee high socks feature Lycra rubber band for extra stretch.The wide and comfortable elastic band will not give you a strong sense of restraint .Hits right at the knee to keep them exactly where you want them ; No more sagging socks! A STAPLE IN EVERY WOMAN’S WARDROBE: Choose from a variety of colors including black, beige, white, and navy Or if you want a little bit of everything to switch it up from day to day, get the assortment! Each pack includes 6 pairs of opaque knee high socks suitable for most occasions including both formal and casual. TROUSER SOCKS WOMEN: The knee socks made with premium nylon,not only can it be used as a fashion accessory, but it can also keep your legs warm when necessary. Form fitting, lightweight, and breathable fabric features maintain stability regardless of activity. These knee high socks stretches and conforms to most leg sizes for a non-constricting comfort. Designed to stay up on the calves without slipping off, yet not tight enough to cause discomfort. Treat yourself, a friend, a family member, or a loved one to these sexy knee high socks. As an essential piece for fashion wear, 6 pack of women's trouser socks are suitable for various occasions and meet your weekly needs.