Tired of having to check the weather before deciding which sunglasses you want to wear' The Zeal Big Timber Polarized Photochromic Sunglasses are the only shades you'll need from now on thanks to photochromic lenses and versatile, go-anywhere style. Zeal's Automatic photochromic lenses respond to changes in light so you don't have to swap lenses or shades when the sun disappears behind the clouds. The lenses are also polarized to eliminate glare and offer 100% UV protection. The lightweight, yet durable Z-Resin frame is made with bio-based materials to reduce harm to the environment. Proflex nose and temple pads prevent your sunglasses from flying off when you're getting active. The Big Timber also has a sporty, yet casual look that you can rock whether you're rcok climbing, riding your bike, or just roaming around town. Proposition 65 Warning for California Consumers: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.