...That about 99% of people in the world don't know what bamboo looks like exactly? Well, now you do because these sunglasses are crafted from the best bamboo in the bamboo quality industry. If you already have a Bamboo bow tie or a bamboo watch, it makes sense to get the bamboo sunglasses too for the whole package.
People look stupid without bamboo glasses why? Because their normal glasses get heated, not bamboo, people also think that we that wear bamboo sunglasses are dumb because the frame could break, but again, bamboo is one of the strongest woods ever created.
So wear a bamboo watch because it is a natural thing to do (get the joke? nature and glasses?)