Had an auto accident and broke my freaking glasses. I know sad right? So I sign on and there is this notice about a guarantee. So instead of 45 plus for a new pair its $25. Since I paddle board and fall at times, I needed a pair of floating sunglasses that wont break my bank. These suckers float, in fact I lost them on the river in a current and paddled down and there they were waiting for me. The reduction of glare and the ability to see into the water are such a benefit.
You have one grateful person. I am sold.