This is the second time I've ordered from KZ, this time for my fiancé, after he fell in love with my floating shades. So obviously, the most important feature is they float - which they do. Believe me, I've tested that! They are stylish as well. Next to the shades themselves, is the customer service. KZ tells you every step of the way where your order is, thanks you, and ships quickly. I found them through Facebook, so was a little hesitant, but couldn't be more impressed overall. Will continue to buy from them as needed!