Very long waited for the shipment, the seller pulled with the shipment for more than a week. Travel time expected about 2 weeks. The slippers are tough, but with a big effort can break. When used, you have to balance or hold on to the walls. I think that there is no use for two such slippers at the same time. The day after the first use broke the heel pumice, just cracked. But the further operation is not reflected.