After receiving my order I discovered that one of the lenses was not the correct prescription. After checking my order I found that I had incorrectly entered my prescription for that lens (I had misplaced the decimal point, entering +2.5 instead of +0.25). I informed KZFOO of my mistake, and they generously allowed me full store credit on a new pair!! I immediately ordered a new pair, being VERY careful to enter the prescription correctly. Thank you KZFOO!