Using these pedals is easy. Just install them on your bike according to the standard procedure. Make sure to adjust the 10 pins on each side to your preferred level of grip. For the best experience, match the pedal size with your shoe size. The small size is for US 5 - 10 or EU 37 - 43, and the large one is for US 10 - 15 or EU 43 - 49. When riding, you'll notice the secure foothold provided by the concave platform. As for maintenance, use the grease port regularly to keep the bearings in good condition. There's no need to worry about the rider weight as there's no restriction. But be careful during installation to avoid any damage. These pedals come with a 5 - year warranty, so if you encounter any problems, you can get it sorted out easily.