I love rainbows so much. After buying my first pair i am never going back to regular sandals. They are so comfortable and dont hurt my feet like regular sandals. I recently purchased the black color rainbows with the thin strap and i will say i do prefer the thin straps as they are more girly. But you can never go wrong with the original thick strap! ;) they are also less painful to break in than the thin strap rainbows.