An evolution of an OTIS classic, Summer of 67 Eco is an upgraded, larger, eco-friendly version of our popular Class of 67 frame. Inspired by iconic eyewear designs of the 1960's, Summer of 67 Eco boasts a rounded frame with accentuated temple rivet details to provide extra flair. The Summer of 67 Eco features our eco-friendly acetate frame, made from renewable resources widely present in nature. Derived from cotton seeds and plant matter, the acetate component of this frame is recyclable and biodegradable.