FLOW SCAPE introduces a new design and newly developed flat wide single lens model to ensure a wider field of view. Provides +64% wider field of view than LINE MINER Single lens construction provides more distortion of vision compared to double lenses, lighter weight Uses Oakley's exclusive lens replacement system. Simply lower the SWITCHLOCK located next to the frame and unlock the lock for quick and easy swap between different lenses Asian Fit Depth; Asian fit model that conforms to the shape of the Japanese face Frame, strap, and micro bag materials are all made of sustainable materials. Made from recycled materials that are natural and environmentally friendly. Straps are made of recycled polyester material