Tool Eyeglasses by Henau. HENAU is famous for its unique, hand drawn eyewear designs that combine optical functionality with avant-garde look. The frames are contemporary art-pieces appreciated by people who love playful shapes, structure and bold color combinations. HENAU optical frames and sunglasses feature refined forms, geometric abstract and timeless design. Pure craft based on the brand’s traditions with a touch of uniqueness is what makes these spectacles stand out from the crowd.