- Velcro back closure for quick release and dark under bill to keep off the glare when on the water

- 100% Peruvian Pima cotton jersey knit

- Elastic sewn into the hems for durability and stretch retention

- Button-down collar

- 100% Authentic Bison Leather

KC Rose Gold Sunglasses with Gray 580P Lenses by Costa Del Mar Color:Gold - Velcro back closure forGray 580 Plastic Lens. Comfortable small fit. Integral hinge. Corrosion resistant Monel frame Includes hard case. 100% UV light blockage for max protection. 100% polarization kills reflected glare and reduces eye strain. Built by hand and backed for life. Every pair of Costas include a lifetime warranty. Plastic lenses are lightweight, impact and scratch resistant.