2015 Triathlete Buyer’s Guide: Bike Accessories

Zeal Optics Helix sunglasses

$150, Zealoptics.com

Instead of crude oil, Boulder, Colo.-based Zeal Optics uses either a plant-based or biodegradable material for all of its plastic frames. In addition to being eco-friendly, Zeal’s performance frames are built for the road: The Helix has rimless lenses for optimal peripheral vision, a durable yet light build and strategic cooling vents near the temples.

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