Un peu obsessed, I am.
... with a pair of flipflops. Because they have an ankle strap. I like to walk fast, and open-heeled shoes slow me down. Don't talk to me about clogs--I can't stand 'em. Teva's are great, but a bit style-free. And these flip-flops have nothing of the Berkeley matron about them, which appeals to me. 
After extensive Googling, I tracked them down on the Web, and finally found where to order them. They're called the Melissa Ipanema, and Zappos.com has them in just one color and a couple of sizes--neither of them mine. I had to console myself with a similar style, in Brazilian colors: 
Zappo's delivered them in *a day,* at no shipping charge. Living right next door to San Francisco, where Zappo's is based, helps. But I'm getting the Ipanemas in pink from the manufacturer's web site. Now I'll be shod stylishly for the remainder of the warm-weather months. For us, that's through October.