Auto Sun

Photochromic + Polarized Sunglasses

For All-Day Adventures In Changing Light Conditions

Auto Sun combines premium polarization with photochromic technology to provide exceptional and consistent color, clarity and contrast regardless of the day’s light and weather conditions.

Zeal welcomes four of its top-selling active frames into the Auto Sun Collection. Ideal for all-day adventures, where you’ll be in and out of the shade, and it’s a staff and Ambassador favorite for activities such as golfing, fishing, jogging, cycling and even driving. Previously available in a very select group of frames, it’s time to share the Auto Sun revolution with faces of all shapes and sizes!


Designed for days outside in changing light conditions, photochromic technology automatically adjusts from a low-light, bright yellow with a 28% Visual Light Transmission (VLT), to a high visibility persimmon with a 15% VLT for sunny conditions.


Reflected light and UV exposure can cause glare, eye fatigue, and sensitivity, all of which disrupt your view of the world around you. Polarized lenses eliminate 99.9% of glare and blocks 100% of harmful UVA/B/C rays, protecting against the risk of long-term damage to your eyes from the sun’s harsh rays.


Auto Sun frames are made from Z-Resin, our unique plant-based polymer derived from the castor plant. This durable plant-based material contributes to a lighter weight frame, for more comfortable everyday wear and activities.

close up of man wearing zeal auto sun photochromic polarized sunglasses with water background

"My husband LOVES these sunglasses! He can't believe he waited so long to buy good quality glasses for running and biking. Every time he wears them, he says, 'Have I mentioned how much I love these?' "

★★★★★ - Molly R.

woman wearing zeal morrison auto sun photochromic polarized sunglasses with rocky moab background

"Was looking for a pair of single pair of glasses for Great Divide Mountain Bike Route. Road 1,500 miles of gravel/dirt/varying singletrack/sun/shadows/rain/ect. from Banff, CA back home to CO. LOVE these sunglasses, and this lens!"

★★★★★ - Mackenzie W.

three surfers walk away along the beach

Polarized Plant-Based Sunglasses

More Color. Less Pollution.