Details The same icon with a metal edge. The Smith Lowdown Steel is a new version of the familiar Lowdown silhouette but with lightweight, stainless steel temples - a modern look with all the features you need like a 4 base facefront, no-slip megol nose pads, and innovative ChromaPop lenses to enhance every detail. Metalize your style with the new Lowdown Steel. Lens ChromaPop™ lenses 4 Base lens curvature Frame Evolve eco-friendly frame material: Smith incorporates the revolutionary, Rilsan® Clear material into what has become the largest eco-friendly sunglass collection in the world. This material allows them to create lightweight, durable frames, that are over 53% bio-based. Rilsan® Clear is derived from the renewable, non-genetically modified castor plant. Characteristics of this material include flexibility, lightweight, high elasticity, remarkable toughness, and excellent chemical resistance. Most importantly, this material is not petroleum based. Stainless steel temples Details Custom Smith metal hinge Hydrophilic megol temple and nose pads for a secure fit Lifetime Warranty Size Medium fit / Medium coverage Smith Lowdown Steel Sunglasses