The awning skirts prevent a cold draft of air below the caravan or motorhome. Already on summer evenings, this can be very uncomfortable. The caravan awning skirt with integrated pockets increases the comfort tremendously by additional shelves in the awning. The wheel arch covers protect against drafts and extend the life of the caravan tires because of the protection from sunlight.
The wind guard have the same function in motorhome and camper.