Alchemi Labs River Sun Hat with Radiant Barrier Technology

Now: $39.00 - $39.95
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Stay cooler on hot, sunny days by reflecting the sun's heat 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 a moisture-wicking sweatband, ventilated sides, adjustable sizing, and a chin strap, this hat is ready to take on the extremes. The streamlined crown and asymmetrical brim (wider in the back) is suitable for more active use, and is a favorite for paddle sports, gardening, hiking, and much more.


  • Radiant barrier on top of crown and brim: UPF tested 800+, blocks 99.8% of UV rays, reflects up to 80% of the sun's heat waves
  • Moisture-wicking sweatband
  • Adjustable cinch strap to fine tune sizing
  • Chin strap with barrel lock to help secure the hat on windy days
  • Lightweight mesh side panels for maximum ventilation during activity.
  • Lower profile crown fits average head sizes well; cinch the adjustment for smaller hat sizes. For larger hat sizes, consider the Alchemi Labs Expedition Hat which has a more generous fit.
  • Shell: 100% nylon. Mesh: 100% polyester. Radiant barrier substrate: polyester.
  • Hand wash in cold water with mild soap, hang dry.

Additional Details

Care instructions:
Hand wash in cold water with mild soap, hang dry.

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