Native customer service flat out sucks. Lifetime warranty? Oh sure, but you have to pay a $30 "handling charge." I bet the shades didnt even cost that much to manufacture.
First pair I bought, I wiped the lenses with windex. Turns out the reflective coating came right off. No mention in the literature or their website about it. Called them up and was directed to their website return procedure, which involved sending in the entire sunglasses. And a check for $30. And a note complaining about a lifetime warranty that costs $30. Couple months go by and I get a brand new pair and they refunded my $30. Cool beans aside from not having my sunglasses for 3 months.
Second pair, same thing happened without the windex being involved. This time I was told from the start it was a defect in manufacturing and told to send them in again and I would get a new pair. Sure enough they did, again taking two months, but this time they shorted me on the dummy cord.
I really like the glasses themselves but the quality leaves much to be desired. CS is slow. Last pair I bought at REI to bypass the bullshit.