Birkenstocks are by far one of the most comfortable, supportive, best quality type of footwear around. In saying that, however, if you need support,  stay away from the EVA & SOFTBEDS. They sound amazing but break down way faster. I have had birkenstocks for years when rotated with other shoes, they last years. If I wear them 16 hours a day, day in & day out, they last about a year and a half to two. EVA & SOFT SOLE are lucky to make it 3 months without breaking down. Also, Burkubucs start splitting & cracking. Go with the originals in leather & you will be a life customer.