Using the Sand Filter by Swisstekh the micro scratches caused by hand washing are significantly reduced. The Sand Filter provides excellent protection against the circular marks induced by washing, keeping the dirt on the bottom of the wash bucket; in so doing, all the potentially harmful dirt is deposited on the bottom of the bucket, keeping it away from the glove. The new system, thanks to its upright part, allows for easy cleaning of the glove during rinsing, removing dirt from the latter and keeping it on the bottom of the bucket, avoiding even accidental contamination.