Possible danger note,because of how soft he plastic is, the front of the shoe sometimes folds under causing tripping and strubbing of feet and toes, possibe falls. I have bought a second pair of these for indoor use only, be aware. I would rather have more choices but buy again because of lack of alternatives.

If these shoes weren't so highly over-priced for what they are, I'd give 4 stars. It's a good Birkenstock design, with the great negative-heel comfort. But,these are made of a one piece injection moulded foam-type-plastic. That means the great light-weight material that makes the soft upper straps is the same material used for the soles, foot-bed and entire bottom of the shoe! For sure, don't walk on rocks (ouch!) or hot asphalt (will melt). These make a great indoor-only shoe for people who need some support and mustn't go barefoot, even inside. They are fabulous "slippers" especially because the design can be "slipped on" (with out using hands) at the bedside, and can be worn with or without socks, accommodating seasonal weather changes (people who wear socks to bed in winter because the heat is off at night). Terrific shoe for people who remove outdoor shoes at the door and want these for inside only.

  The one piece plastic means they are made with very low labour (human workers) costs. I acknowledge that the machines are expensive and must be maintained by people, but that said, these should sell for about $20 to $25, tops (unless there's a recycle program in place and a pollution mitigation costs being paid, which I am hopeful for, but in doubt of). The mark-up is ridiculous. By them on sale so you won't regret the expense. Also note, they run too big for size, I've had lots of trouble getting Birk's (all brands) that fit, they seem too big at the right size and too small at the next size down (very frustrating). Consider buying one size smaller for fit, or be prepared for the return-shoe-shuffle.