The Fossil Fos 2141/S rectangular metal sunglasses feature a matte black frame with precise rectangular shaping, measuring 63 mm in width for optimal facial coverage. Crafted from durable metal materials, these sunglasses combine structural integrity with refined aesthetics suitable for adult male users. The rectangular frame design provides balanced proportions that complement various face shapes while maintaining a sophisticated profile. High-quality polycarbonate lenses offer 100% UV protection against both UVA and UVB rays, ensuring comprehensive eye safety during outdoor activities. The lenses are engineered to reduce glare and enhance visual clarity across different lighting conditions. Metal temple arms extend approximately 140 mm with integrated spring hinges for comfortable wear and improved durability. The matte black finish resists fingerprints and minor scratches while maintaining its appearance over extended use. Weighing approximately 45 grams, these sunglasses provide comfortable all-day wear without excessive pressure points. The nose pads are adjustable for a personalized fit and feature non-slip surfaces to maintain position during movement. Fossil's attention to detail is evident in the smooth hinge mechanism and precise frame construction that ensures consistent performance. These sunglasses meet international optical standards for sun protection and are suitable for driving, outdoor sports, and daily casual wear. The rectangular metal design represents a balance between contemporary style and functional eyewear requirements, making them appropriate for both urban and recreational environments. Care instructions include storing in the provided case when not in use and cleaning with a microfiber cloth to maintain lens clarity. The product ships with a protective case and cleaning cloth as standard accessories.