Whats The Difference Between The Flip Micro Hd And The Ultra Hd Whats The Difference Between Flip Flops And Sandals?

Whats the difference between flip flops and sandals? - whats the difference between the flip micro hd and the ultra hd

These are flip-flops:
http://www.endless.com/dp/B002R0ENPE/ref ...

If only two straps, which is located between the toes.

The sandal's open-toed shoes would be the spring / summer.