Excellent quality. Purchased and delivered in early winter and did not move. A little cramped at first but got a little loose for custom today. The sole bottom does not slip. The insole is well adapted to the arch of the foot and is comfortable. I had enough to buy supermarket slippers that rupture and deform n less than 2 months. I tried buying them significantly more expensive and actually the quality was at the rendezvous. They left for several years.