I have own similar Birkenstocks before , and I order this only because I need new one . my old Birkenstocks last I a good three year , and I would still wear they , but unfortunately , I lose one of the shoe . for I , I have no trouble break into these ultra comfortable shoe . I do advise , however , that although these shoe be comfortable , they be not good for extremely long walk because the arc can tire you foot out faster than usual . I love how I can wear just about anything with these sandal , and I also love how it be not shape like some cheap flip-flop . they do not look waterproof , but they handle water just fine , and they can last way longer than Rainbows if you take care of they . overall , I strongly recommend try these shoe !