Benecia 12 Knee-Socks - 5 Color options Product Information:Add anti-slip function. Knickers cannot be exchanged or returned after opening.No exchange if the package is damaged. Materialcotton polyurethaneSize: One size Note- The color of the product may differ slightly from the actual color depending on the resolution of the user's monitor.- The color of the product cut is most similar to the actual product color.