The Neurotoxin 3.0 is Optic Nerve's tried and true half frame with interchangeable lenses, a fully adjustable fit, and all of the features that you could possibly need to tackle the road ahead. The aggressive styling is apparent, but not overdone, to ensure that you're equipped with the style to match the winning feel of these best selling performance sunglasses. Features: - Unisex // Fits average face sizes - Hydrophobic lens coating to repel water, sweat, oil, and dust - Wire-core adjustable rubber nose bridge and non-slip rubber temple tips for a secure fit - 100% UVA/UVB Protection - Soft and hard case - Three sets of interchangeable lenses for variable light conditions