Leather wristband – we do not recommend you to wash the leather wristband. Any exposure to water will dry the leather and possibly cause damage to the wristband. However, a local watchmaker or watch retailer may have cleaning products specifically designed for leather.Mesh wristband - With the Mesh strap, we recommend to give it a light clean by mixing some water and detergent. Please use a toothbrush and a cotton swab to clean it. The toothbrush can be good to reach into the small spaces in between.Please do always remove the strap from the watch face when cleaning the strap.