The thing about classics is they slip across decades. The Lowdown 2 sunglasses could be from this season, next season, or 1962. The bio-based frames have soft rubber nose pads, so they don't slide down your face when you break a sweat. 

A brown based lens boosted with ChromaPop color enhancement technology and finished with an opal mirror. Great for use in areas of medium to bright exposure, this lens will enhance color and clarity and let you effortlessly see more detail. This lens is polarized to reduce glare. Provides 100% protection from harmful UVA/B/C rays.