First, the description of these sunglasses' protection level doesn't do them justice.  They are UV400 lenses, which is the best you can get by blocking all UV-A, UV-B and UV-C from 0-400nm.

Second, they just look cool.  I got the Fire color.

Third, when you get the 3-pack for $15 the price can't be beat.

Lastly, others have complained about them being too small.  I'm 6'2" and 185lbs and they fit me perfectly.

The 3-pack is a deal that just can't be beat.  I put one pair in my car, the second in the truck and the third in the house so I've always got a pair handy.