Don't buy these... I'll give them points for style, I love the look of these sunglasses. The arms are in fact made of wood, and the frames in general seem to be fairly durable, but the lenses are TERRIBLE, they are very thin, (I can flex them in the frame with little effort), and they distorted my vision and did little for the reflection of the sun of the windshield of oncoming cars.
I had these and a pair of $ 25 Foster Grants that I bought at a gas station and kept switching between them and my vision with the Foster Grants was way better and clearer.
If all you care about is cool styling, I guess these are OK, but if you actually anticipate needing to see clearly while wearing a pair of sunglasses as well as looking good, buy something else...