I have many pairs of skechers tone-ups sandals.  I don't buy them because they tone up my legs (haven't noticed a difference), I buy them because they are so darn comfortable to wear.  I have a couple pair that I have had for 3 years and I wear them all the time.  Very very durable.  When they get dirty I put them in the washing machine and set them outside to air dry.  Many styles and colors to choose from.