Size Chart NOTE: We advise you to choose the size of shoe cover longer than your usual shoes sole length 0.5-0.8 inch. M: Shoe Cover Length 10.4 inch (26.5cm). Fit US Women size 5 - 5.5 . L: Shoe Cover Length 10.8 inch (27.5cm). Fit US Women size 6 - 6.5 . XL: Shoe Cover Length 11.2 inch (28.5cm). Fit US Women size 7 - 8, US Men size 5 - 6 . 2XL: Shoe Cover Length 11.8 inch (30cm). Fit US Women size 8.5 - 10, US Men size 6.5 - 8 . 3XL: Shoe Cover Length 12.6 inch (32cm). Fit US Women size 10.5 - 12, US Men size 8.5 - 9.5 . 4XL: Shoe Cover Length 13.4 inch (34cm). Fit US Men size 10 - 12 . Application 1. These shoe covers will provide protection for a long time in a rainy location or for any weather deluge. 2. Very affordable and perfect for car or office on days use you are surprised with a sudden shower or snowstorm, also work in cold, snow, slush, mud, etc. 3. Especially for keeping your shoes and feet dry when riding a bike in wet weather. 4. Students can walk it to school without having the headache of wet shoes and socks. 5. You can walk several miles in these shoe covers without getting wet and without any noticeable wear, they fold up nicely into a storage bag so they do not dirty the clothes in your suitcase during your vocation.