I am 46, and until a couple of years ago I hated "flip-flops" mostly because of how uncomfortable they feel between your 1st and 2nd toes, and how badly my feet would start to hurt after only half an hour of walking in them. I am also a big guy -- 6'2", 265lbs -- with flat feet. Add to that the bone spurs in my feet and the tendency to get plantar faciitis.
Flip-flops, sandals, thongs, slippers -- whatever you call them where you're from -- were definitely not for me. That is, until I happened across these sandals at a local , trendy shoe retailer. These sandals are amazing.
They are designed and made by a company which makes, of all things, orthotics. They support my weight and compensate for my flat feet like no other sandal I have ever tried. Over time, they form to your feet, like any good orthotic should, making them so comfortable you forget you're wearing them. And I never even feel the strap between my toes, it is so well designed.
These sandals are so comfortable and stable that I wear them constantly throughout the warm seasons. I buy two pair each spring, one for getting dirty working in the garden and one for cruising around the house or walking the shoppes. To me, they are well worth the price. I can even comfortable drive a car with a manual transmission wearing them...something I can't do while wearing any other sandal. Another test is how long can you stand in a pair of sandals before your feet start to hurt...in these, I have not found a maximum yet. In other sandals, it is something between 15 and 30 minutes.
I have tried a couple other branded sandals with arch support, but they never got comfortable. So I came back to these. I only hope that they never stop making them.