SM (US shoe size: Women's 5-10.5/Up to men's 8.5)M/L (US shoe size: men's 7-12.5/women's 8.5-14)XL (US shoe size: men's 10.5-15/women's 12+)HOW TO CUSTOMIZE: #1. Choose a pattern and click the "CUSTOMIZE NOW" button ➡️. #2. Choose a size and color option if available. #3. Choose "UPLOAD YOUR IMAGE" button to upload a photo of a person or pet. **Note: Please upload a high resolution photo with clear and visible face in good lighting to insure the highest quality print.✅ SEAMLESS DESIGN: Using advanced printing techniques, our socks have a 360 seamless design. That means no lines on the side of your socks and a perfect seamless pattern that wraps around without graphical breaks or misalignments✅ SUPERIOR PRINT: Our socks not only boast high quality, sharp graphics, but also limit image degradation while wearing them. That means the image doesn't fade or show unsightly white lines when they're stretched like other custom socks.✅ LASTING MEMORIES: Custom face socks are suitable for everyday wear, special events, or as a personalized gift for loved ones. They're sure to bring a smile to your recipients face while remaining completely practical for everyday use