For the dirt on the leg cloth cover, please open the zipper to remove the cloth cover, wash it with neutral detergent, and then re-install it in the calf plastic frame after drying.
For the dirt at the leg and foot cloth cover, please open the zipper to remove the cloth cover, wash it with neutral detergent, cool and dry it, and then reinstall it in the plastic frame of the lower leg.
Dirt at the leg cloth cover, please unzip and remove the cloth cover, wash it with neutral detergent, dry it and then put it in the plastic frame of the calf.