Spandex,Nylon 【Stretchy Nylon Ankle Socks】High elastic and sheer crew socks hug your feet with snug fit and comfort. Stretchy elastic band makes these anklet socks easy on and stay up without binding. 【Breathable Pantyhose Socks】Nice choice for summer Thin and see through sheer dress socks for daily fashion. Freely match with high heels, flats, keeps your feet dry and cool. 【Durable Reinforced Toe】Ankle high sheer socks with reinforced toes made of high-density nylon which are tear-resistant and keep in shape after repeated wear and hand washing. 【Silky, Sheer, Smooth】These silk socks are made of a premium blend of nylon and spandex, which is better than socks made of 100% nylon. Our sheer ankle socks reflects silky smoothness and durable to wear. 【12 Pairs Bulk in Free Size】 One size fits all for it is high electricity and density, please feel free to choose your socks. We also provide return and refund about sizes and other dissatisfactions.