Thought would be less expensive to have kit that contained everything but not all parts work together well. Comfortable as googles but detachable earpieces make glasses pinch side of head and ride up off of nose. In addition, decreased peripheral vision which is common with all googles I suppose. A real pain to stop and change out lenses when ride transitions from day to night. Does not quickly convert back and forth as advertised. I ended up purchasing 2 separate pairs of glasses anyway because this was too much hassle. Good concept on paper that just doesn't work in reality.
I will say product is very sturdy and does come with handy carrying case. Would probably be OK if you intended to wear only one set of lenses while riding.