Ray-Ban Mega Wayfarer Bio-Based Sunglasses Brand New! Missed the return window Transparent red with dark grey bioacetate frames and bio-nylon lenses Personalize your favorite frames with our range of custom sunglasses. Create your own custom Mega Wayfarer and stand out from the crowd. Meet Ray-Ban Mega Wayfarer Bio-based RB0840S sunglasses, the latest addition to our bio-based Style collection. Crafted from bio-acetate having 67% bio-based carbon content, these oversized Sunglasses are an alternative to the classic Wayfarer model. Join the revolution with the lenses in dark grey and the frame in transparent red.