Rain pants are handy, offer good resistance to rain, wind and the elements, and are easy to put on. Some models' zippers open all the way, to make it even quicker.
At least your legs won't get wet anymore. A disadvantage is that rain pants (compared to a one-piece suit) obviously have a beginning and an end. Elastic material around your loins is a potential entrance for wind and water.
Motorcycle pants with a breathable outer fabric prevent you from getting wet due to body moisture or sweat from the inside anyway .
Tip from RAD house
The sizes of rainwear for the motorcycle correspond to the size table of motorcycle jackets. Not with the sizes of your body. If you wear a size L pants, you also need rain pants size L, not roomier ones.