The Profi Birki professional clog is of a quality that can be used for years. However, the insole is part of the clogs that can wear out first if overused. For that reason Birkenstock produces insoles specifically for the Profi Birki clog. The insoles are made of polyurethane and may be washed at 60 ° C. This guarantees the high level of hygiene, where the professional clog is known for. The insoles can best be bought in the size of the clog. In this way, the sole fits perfectly.