Guideline Eyegear Jack Polarized Sunglasses -
Named for the crevalle jack—a powerful, predatory fish that puts up a dogged fit—Guideline Jack Polarized Sunglasses have a square design and oversized temples to block more light. Polarized polycarbonate lenses block glare and provide 100% UV protection. The angular frames are made from eco-friendly Grilamid BTR, a material that is better for the environment for 3 reasons. First, the CO2 emissions generated during the manufacturing process are 44% less than normal. Second, it's made from 54% castor bean oil, which is sustainably produced and represents a true alternative to crude-oil-based plastics. And third, Grilamid BTR is fully recyclable. These forward-thinking frames incorporate spring hinges for a comfortable fit.