Sometimes,time spent on plane or train is too long, and there is a lack of resting space for the legs. Since you need to stay in the same position for several hours, it tires your legs easily. If you have a peculiar footstool to keep your feet in place, it will relax your legs effectively. Even your abdominal muscles are strong enough to extend your legs on the floor, but this means that you must stay awake to avoid your legs being numb during sleep. However, with this product, it can help you solve this problem ! ! ! Note: The length of the webbing can be adjusted from 45 to 90 cm (17.7 inches to 35.4 inches) to suit travelers of different heights.