Designed for the active lifestyle, Costa Mainsail XL sunglasses are ready to tackle any challenge you throw their way. The square lens shape and matte gray smoke frame exude an effortless style that is perfect for any occasion. Featuring green mirror lenses with solid color treatment, these shades offer optimal protection and enhanced vision while cutting through glare on bright days. Crafted from durable and resilient materials, these sunglasses are built to last so you can continue exploring without worry.