Alchemi Labs Sun Cap Running Hat with Radiant Barrier Technology
Stay cooler on bright days with advanced radiant barrier technology from Alchemi Labs. The reflective panels block 99.8% of UV rays and reflect up to 80% of the sun's heat rays. The same technology is used by NASA to protect astronauts from solar radiation in space. With aggressively ventilated sides and an elasticised quick-release adjustable back, this hat is ready to take on the extremes of your outdoor activities. Generous crown and hatband fits all head sizes including larger hat sizes.
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