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

- Reinforced

- Bird Dog Bay custom tipping

- Moisture wicking technology

- 21W x 10H x 10D

Manta Matte Ocean Sunglasses with Gray 580P Lenses by Costa Del Mar Color:Blue - Velcro back closure forGray 580 Plastic Lens. Comfortable medium fit. Optical spring hinge. Heavy duty TR 90 nylon 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.