The front and tips of the temples are made from tortoiseshell acetate, contrasting with the stainless steel temples. The acetate tips, which provide a more comfortable fit, match the colour of the front.Unisex modelPolarised lenses reduce surface glare and eye strain, offering superior sharpness and contrast.Lens material: Lenses made from bio tac polarised material. 100% UV protection.Category 3 filter, dark enough for outdoor use in strong sunlight. They absorb between 82 and 92% of sunlight.Lens appearance: SolidLens colour: BrownFrame material: Metal, AcetateFrame colour: TortoiseshellTemple colour: Tortoiseshell