The deposits are a real boon for a 12 hour shift in work boots with steel toecaps. They fit very well in the shoe, do not slip and offer a pleasant Tragekomport. One can wash these deposits, unfortunately, can not be seen. Neither is pointed out in the description, yet it makes sense to wash insoles with activated charcoal, I think (could be read in the reviews). It is better, perhaps, to exchange those deposits regularly. Will I buy it again!