* The vehicle manufacturers identified the models for which they offer belt extenders or extra webbing. The vehicle sales data from Automotive Nachrichten were used to quantify the number of vehicles rein the fleet. Polyester is now commonly used for seat belt material. Nylon was once the most common fabric, https://bbs.pku.edu.cn/v2/jump-to.php?url=https://www.ledteks.com/seatbelt-and-safety-belt-webbing