Since there are glowing reviews, I'll add a few notes.

Comfort:  Yes, they are comfortable and I suspect for most reviewers and shoppers this is a second, third or fourth pair.  I live in Florida and do a lot of kayaking and spend a lot of time at the beach.  Excellent for both uses.  But the reason for my review is in relation to an issue I had with plantar fasciitis.  For anyone who has had that heel pain, it is very troublesome.  Recalling how comfortable these were, I purchased what has to be my fifth pair and started wearing them all the time.  I got significant relief within a month.  I'm not a doctor but I will attribute this to the comfortable and supportive footbed anyway.

Wear:  I tend to get about 2 years of wear out of these and I have never had to replace due to a failure in the structure.  The sole is grippy and protective, and I have found that it has a long wear life.  The nylon straps are strong, but will pill/get fuzzy over time, especially when the velcro from the other sandal makes contact. Even my boxer pup couldn't destroy them after several attempts.

Use:  Almost everywhere during the warm months.  I have those Teva tan lines permanently tattooed on my feet!