I bought Havaianas on a whim late last summer because the flip flops I had were literally falling apart. I liked the print, I liked the fit. I've been hooked ever size.

My Feet - I'm in between a 7.5 and 8. They're flat for the most part and wide. So most flip flops fit pretty well.

I got the 37/38 (US Size). They came to me looking a little small but fit - not sure why they look almost 1/2 size smaller than the other ones. But they're great!

Why I like them:
They're comfortable - literally comfortable for me to walk in them ALL DAY. I don't get shin splints like I do with other flip flops in the past. They're a hard rubber which offers something as padding as I'm walking. They're durable. I've had mine for almost a year now, and I wear them ALL THE TIME! My dog has tried eating them, and for the life of me, I can't see the chew marks (where in the past, she's destroyed EVERY pair I've had). The print hasn't faded (most other brands of flip flops do).

I love them so much - I just ordered 5 more for the upcoming season. I literally would love to live in these every day.

The only draw back is - they're a little pricey for flip flops, BUT over the lifespan, it's not so bad.